Innova 3100 OBD2 Code Reader

Owner’S

Manual

The Easiest And Best Way To Troubleshoot 1996 and Newer OBD II Vehicles!

Table of Contents Title Page No.

Introduction

Congratulations! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 What is OBD? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 YOU CAN DO IT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Precautions

Safety First! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

About The Code Reader

Vehicles Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Preparation For Testing

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Vehicle Service Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Preliminary Vehicle Diagnosis Worksheet . . . . . . . . . . . . . . . . . 14

Using The Code Reader

Code Retrieval Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Erasing Diagnostic Trouble Codes (DTCs) . . . . . . . . . . . . . . . . 20 I/M Readiness Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 What’s Next? (road trip readiness, emissions test . . . . . . . . . . . 27 readiness, inspecting a used vehicle)

Learning More

Computer Engine Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Diagnostic Trouble Codes (DTCs) . . . . . . . . . . . . . . . . . . . . . . . 35 OBD 2 Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Dtc Definitions

Diagnostic Trouble Code Definitions . . . . . . . . . . . . . . . . . . . . . 45 Generic DTC Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Manufacturer Specific Codes - Chrysler . . . . . . . . . . . . . . . . . . . 67 Manufacturer Specific Codes - Ford . . . . . . . . . . . . . . . . . . . . . . 70 Manufacturer Specific Codes - General Motors . . . . . . . . . . . . . 83 Manufacturer Specific Codes - Honda . . . . . . . . . . . . . . . . . . . . 93 Manufacturer Specific Codes - Toyota . . . . . . . . . . . . . . . . . . . . 95

Glossary

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Glossary of Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . 97

Warranty And Servicing

Limited One Year Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 i

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Introduction

Congratulations!

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1

Congratulations!

on your choice of OBD 2 Code Reader. This powerful tool will help you take charge of your vehicle’s maintenance and servicing needs. Today’s vehicles use Computer Control Systems to ensure peak per-formance and fuel efficiency while reducing pollutants in the vehicle’s emissions. These systems also have the ability to perform self-testing and diagnostics on various vehicle systems and components, and provide valuable information to aid in servicing and repair. However, these sophisticated systems often required expensive tools and test equipment in order to retrieve this information. Until now, consumers had to rely on professional service technicians to maintain their vehicles in top condition. OBD 2 Code Reader brings the power of the technician into your hands in a cost-effective, easy-to-use package. Whether you are a “put the key in and go” consumer, hobby mechanic or skilled DIYer, Code Reader offers the features and functions you need to take control of your vehicle’s testing, servicing and maintenance needs. OBD 2 Code Reader helps you . . . . ■Save time and money by locating and identifying problems before servicing your vehicle ■Access the same information your mechanic has - for less ■Prevent future costly repairs and maintain engine per- formance with routine inspections ■See if you’re ready for an emissions test (smog check) ■Check your vehicle for road trip readiness ■Turn off the “CHECK ENGINE” light ■Inspect a used vehicle before buying or selling . . . . and more!

Introduction

What Is Obd?

2

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What Is Obd?

OBD 2 Code Reader is designed to work on all OBD 2 compliant vehicles. All 1996 and newer vehicles (cars, light trucks and SUVs) sold in the United States are OBD 2 compliant. One of the most exciting improvements in the automobile industry was the addition of on- board diagnostics (OBD) on vehicles, or in more basic terms, the computer that activates the vehicle’s “CHECK ENGINE” light. OBD1 was designed to monitor manufacturer-specific systems on vehicles built from 1981 to 1995. Then came the development of OBD 2, which is on all 1996 and newer vehicles sold in the U.S. Like its predecessor, OBD 2 was adopted as part of a government mandate to lower vehicle emissions. But what makes OBD 2 unique is its universal application for all late model cars and trucks - domestic and import. This sophisticated program in the vehicle’s main computer system is designed to detect failures in a range of systems, and can be accessed through a universal OBD 2 port, which is usually found under the dashboard. For all OBD systems, if a problem is found, the computer turns on the “CHECK ENGINE” light to warn the driver, and sets a Diagnostic Trouble Code (DTC) to identify where the problem occurred. A special diagnostic tool, such as OBD 2 Code Reader, is required to retrieve these codes, which consumers and professionals use as a starting point for repairs. To learn more about vehicle Computer Control Systems and OBD 2, see COMPUTER ENGINE CONTROLS on page 29.

You Can Do It!

Easy To Use - Easy To View - Easy To Define

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3 Easy To Use . . . . ■ Connect Code Reader to the vehicle’s test connector. ■ Turn the ignition key "On.” ■ DO NOT start the engine. ■ Code Reader turns “On” and LINKs automatically. Easy To View . . . . ■ Code Reader retrieves stored codes and displays I/M Readiness status. ■ Codes are displayed on Code Reader’s LCD display screen; I/M Readiness status is displayed by LED indicators. Easy To Define . . . . ■ Locate fault code(s) in the Fault Code Definition list. ieving Definition emperature Below Threshold (Ba mission Control System Malfunction e Emission Control System Incorrect Purge Flow ative Emission Control System Leak Detected ll leak) vaporative Emission Control System Purge Control Valve Circuit Malfunction 44 Evaporative Emission Control System Purge Control Valve Circuit Open

P0445

Evaporative Emission Control System Purge Control Valve Circuit Shorted

P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

P0447

Evaporative Emission Control System Vent Control Circuit Open

P0448

Evaporative Emission Control System Vent Co Circuit Shorted

P0449

Evaporative Emission Control System V Solenoid Circuit Malfunction

P0450

Evaporative Emission Control Sys Malfunction 1 Evaporative Emission Cont Range/Performance porative Emission nput ive Em

Safety Precautions

Safety First!

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Safety First!

This manual describes common test procedures used by experienced service technicians. Many test procedures require precautions to avoid accidents that can result in personal injury, and/or damage to your vehicle or test equipment. Always read your vehicle's service manual and follow its safety precautions before and during any test or service procedure. ALWAYS observe the following general safety precautions: When an engine is running, it produces carbon monoxide, a toxic and poisonous gas. To prevent serious injury or death from carbon monoxide poisoning, operate the vehicle ONLY in a well- ventilated area. To protect your eyes from propelled objects as well as hot or caustic liquids, always wear approved safety eye protection. When an engine is running, many parts (such as the coolant fan, pulleys, fan belt etc.) turn at high speed. To avoid serious injury, always be aware of moving parts. Keep a safe distance from these parts as well as other potentially moving objects. Engine parts become very hot when the engine is running. To prevent severe burns, avoid contact with hot engine parts. Before starting an engine for testing or trouble- shooting, make sure the parking brake is engaged. Put the transmission in park (for automatic transmission) or neutral (for manual transmission). Block the drive wheels with suitable blocks. Connecting or disconnecting test equipment when the ignition is ON can damage test equipment and the vehicle's electronic components. Turn the ignition OFF before connecting Code Reader to or disconnecting Code Reader from the vehicle’s Data Link Connector

(Dlc).

To avoid personal injury, instrument damage and/or damage to your vehicle; do not use Code Reader before reading this manual.

N

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D

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Safety Precautions

Safety First!

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5 To prevent damage to the on-board computer when taking vehicle electrical measurements, always use a digital multimeter with at least 10 megOhms of impedance. The vehicle's battery produces highly flammable hydrogen gas. To prevent an explosion, keep all sparks, heated items and open flames away from the battery. Don't wear loose clothing or jewelry when working on an engine. Loose clothing can become caught in the fan, pulleys, belts, etc. Jewelry is highly conductive, and can cause a severe burn if it makes contact between a power source and ground.

About Code Reader

Vehicles Covered

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Vehicles Covered

OBD 2 Code Reader is designed to work on all OBD 2 compliant vehicles. All 1996 and newer vehicles (cars and light trucks) sold in the United States are OBD 2 compliant. Federal law requires that all 1996 and newer cars and light trucks sold in the United States must be OBD 2 compliant; this includes all Domestic, Asian and European vehicles. Some 1994 and 1995 vehicles are OBD 2 compliant. To find out if a 1994 or 1995 vehicle is OBD 2 compliant, check the following:

The Vehicle Emissions Control Information (VECI) Label. This

label is located under the hood or by the radiator of most vehicles. If the vehicle is OBD 2 compliant, the label will state “OBD II Certified.”

Government Regulations require that

all OBD 2 compliant vehicles must have a “common” sixteen-pin Data Link Connector (DLC). Some 1994 and 1995 vehicles have 16-pin connectors but are not OBD 2 compliant. Only those vehicles with a Vehicle Emissions Control Label stating “OBD II Certified” are OBD 2 compliant. Beginning in 2003, a very limited number of manufacturers (including Ford, General Motors, Mazda and Saab) began using a new computer protocol called Controller Area Network (CAN) on some OBD 2 vehicles. In basic terms, CAN allows manufacturers to increase and diversify the speed at which the computer communicates with different systems in the vehicle. CAN will be mandatory on all cars by

The OBD 2 Code Reader is compatible with all OBD

2 protocols, including CAN.

Vehicle Emission Control Information

Vehicle

Manufacturer

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Certified

Engine Family Efn2.6Ybt2Ba

Displacement 2.6L

This Vehicle Conforms To U.S. Epa And State

Of California Regulations Applicable To

1999 Model Year New Tlev Passenger Cars.

Refer To Service Manual For Additional Information

Tune-Up Conditions: Normal Operating Engine Temperature,

Accessories Off, Cooling Fan Off, Transmission In Neutral

Spark Plug

Type Ngk Bpre-11

Gap: 1.1Mm

Catalyst

Exhaust Emissions Standards Standard Category

Certification

In-Use

Tlev

Tlev Intermediate

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Certified

1 2 3 4 5 6 7 8 9 10111213141516

About Code Reader

Battery Replacement

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7 Data Link Connector (DLC) Location The 16-pin DLC is usually located under the instrument panel (dash), within 12 inches (300 mm) of center of the panel, on the driver’s side of most vehicles. It should be easily accessible and visible from a kneeling position outside the vehicle with the door open. On some Asian and European vehicles the DLC is located behind the “ashtray” (the ashtray must be removed to access it) or on the far left corner of the dash. If the DLC cannot be located, consult the vehicle’s service manual for the location.

Battery Replacement

Locate the battery cover on the back of Code Reader.

Lift the battery cover off (use your finger or a small coin).

Replace batteries with two AA-size batteries (for longer life, use

Alkaline-type batteries).

Reinstall the battery cover on the back of Code Reader.

This tool has an early low battery warning. If a low battery condition is detected when the Code Reader is turned "On", the battery icon and the three LEDs will flash every second for 10 seconds to warn you that it's time to replace the batteries. It is suggested that you replace the batteries at this time. The Code Reader will not turn "On" (when disconnected from a vehicle) if the batteries go dead.

Near

Center

Of Dash

Behind

Ashtray

Left Corner

Of Dash

About Code Reader

Controls And Indicators

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Controls And Indicators

See Figure 1 for the locations of items 1 through 9, below.

ERASE button - Erases Diagnostic Trouble Codes (DTCs)

and "Freeze Frame" data from your vehicle's computer, and resets Monitor status.

SCROLL button - Scrolls the LCD display to view DTCs

when more than one DTC is present.

LINK button - Links Code Reader with the vehicle's PCM to

retrieve DTCs from the computer's memory, and to view I/M Readiness Monitor status.

POWER button - Turns Code Reader "On" and "Off.”

GREEN LED - Indicates that all engine systems are running

normally (all Monitors on the vehicle are active and performing their diagnostic testing, and no DTCs are present).

YELLOW LED - Indicates there is a possible problem. A

“Pending” DTC is present and/or some of the vehicle's emission monitors have not run their diagnostic testing.

RED LED - Indicates there is a problem in one or more of the

vehicle's systems. The red LED is also used to show that DTC(s) are present. DTCs are shown on Code Reader’s LCD display. In this case, the Multifunction Indicator (“Check Engine”) lamp on the vehicle's instrument panel will light steady on. 1 5 2 9 10 4 7 6 8 3 Figure 1. Controls and Indicators

About Code Reader

Display Functions

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9

LCD Display - Displays test results, Code Reader functions and

Monitor status information. See DISPLAY FUNCTIONS, below, for details.

Cable - Connects Code Reader to the vehicle's Data Link

Connector (DLC).

USB Connector - Used to connect USB cable when transferring

data batween Code Reader and personal computer.

Display Functions

See Figure 2 for the locations of items 1 through 13, below.

Vehicle icon - Indicates whether or not Code Reader is being

properly powered through the vehicle's Data Link Connector (DLC). A visible icon indicates that Code Reader is being powered through the vehicle's DLC connector.

Link icon - Indicates whether or not Code Reader is com-

municating (linked) with the vehicle's on-board computer. When visible, Code Reader is communicating with the computer. If the Link icon is not visible, Code Reader is not communicating with the computer.

Computer icon - When visible, indicates the Code Reader is

connected to a ppersonal computer to upload or download data (PC Link is an optional accessory).

Internal Battery icon - When visible, indicates the Code

Reader batteries are "low" and should be replaced.

DTC Display Area - Displays the Diagnostic Trouble Code (DTC)

number. Each fault is assigned a code number that is specific to that fault. 1 2 3 4 5 6 8 7 9 10 11 Figure 2. Display Functions

About Code Reader

Display Functions

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FREEZE FRAME icon - Indicates that there is Freeze Frame data

from “Priority Code” (Code #1) stored in the vehicle’s computer memory.

MIL icon - Indicates the status of the Malfunction Indicator Lamp

(MIL). The MIL icon is visible only when a DTC has commanded the MIL on the vehicle's dashboard to light.

Code Number Sequence - Code Reader assigns a sequence

number to each DTC that is present in the computer's memory, starting with "01.” This helps keep track of the number of DTCs present in the computer's memory. Code number "01" is always the highest priority code, and the one for which "Freeze Frame" data has been stored. If "01" is a "Pending" code, "Freeze Frame" data may or may not be stored in the vehicle’s computer memory.

CODE icon - Identifies the Code Number Sequence display area.

Pending icon - Indicates the currently displayed DTC is a

"Pending" code.

Monitor icons - Indicates which Monitors are supported by the

vehicle under test, and whether or not the associated Monitor has run its diagnostic testing (Monitor status). When a Monitor icon is solid, it indicates that the associated Monitor has completed its diagnostic testing. When a Monitor icon is flashing, it indicates that the vehicle supports the associated Monitor, but the Monitor has not yet run its diagnostic testing.

About Code Reader

Display Functions

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11 A maximum of eleven Monitors are used on OBD 2 systems. Not all vehicles support all eleven Monitors. When Code Reader is linked to a vehicle, only the icons for Monitors that are supported by the vehicle under test are visible on the display. Following is a list of Monitor icons and their associated Monitors. = Misfire Monitor = Fuel System Monitor = Comprehensive Component Monitor = Catalyst Monitor = Heated Catalyst Monitor = Evaporative System Monitor = Secondary Air System Monitor = Air Conditioning System Refrigerant (R-12) Monitor = Oxygen Sensor Monitor = Oxygen Sensor Heater Monitor = Exhaust Gas Recirculation (EGR) Monitor To learn more about Monitors, what they do, and how they work, see OBD 2 MONITORS on page 38.

Preparation for Testing

Before You Begin

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Before You Begin

OBD 2 Code Reader aids in monitoring electronic- and emissions-related faults in your vehicle and retrieving fault codes related to malfunctions in these systems. Mechanical problems such as low oil level or damaged hoses, wiring or electrical connectors can cause poor engine performance and may also cause a "false" fault code. Fix any known mechanical problems before performing any test. See your vehicle's service manual or a mechanic for more information. Check the following areas before starting any test: ■Check the engine oil, power steering fluid, transmission fluid (if applicable), engine coolant and other fluids for proper levels. Top off low fluid levels if needed. ■Make sure the air filter is clean and in good condition. Make sure all air filter ducts are properly connected. Check the air filter ducts for holes, rips or cracks. ■Make sure all engine belts are in good condition. Check for cracked, torn, brittle, loose or missing belts. ■Make sure mechanical linkages to engine sensors (throttle, gearshift position, transmission, etc.) are secure and properly connected. See your vehicle's service manual for locations. ■Check all rubber hoses (radiator) and steel hoses (vacuum/fuel) for leaks, cracks, blockage or other damage. Make sure all hoses are routed and connected properly. ■Make sure all spark plugs are clean and in good condition. Check for damaged, loose, disconnected or missing spark plug wires. ■Make sure the battery terminals are clean and tight. Check for corrosion or broken connections. Check for proper battery and charging system voltages. ■Check all electrical wiring and harnesses for proper connection. Make sure wire insulation is in good condition, and there are no bare wires. ■Make sure the engine is mechanically sound. If needed, perform a compression check, engine vacuum check, timing check (if applicable), etc.

Preparation for Testing

Vehicle Service Manuals

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13

Vehicle Service Manuals

Always refer to the manufacturer's service manual for your vehicle before performing any test or repair procedures. Contact your local car dealership, auto parts store or bookstore for availability of these manuals. The following companies publish valuable repair manuals: ■Haynes Publications 861 Lawrence Drive Newbury Park, California 91320 Phone: 800-442-9637 ■Mitchell International 14145 Danielson Street Poway, California 92064 Phone: 888-724-6742 ■Motor Publications 5600 Crooks Road, Suite 200 Troy, Michigan 48098 Phone: 800-426-6867

Factory Sources

Ford, GM, Chrysler, Honda, Isuzu, Hyundai and Subaru Service Manuals ■Helm Inc. 14310 Hamilton Avenue Highland Park, Michigan 48203 Phone: 800-782-4356

Preparation for Testing

Preliminary Vehicle Diagnosis Worksheet

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Preliminary Vehicle Diagnosis Worksheet

The purpose of this form is to help you gather preliminary information on your vehicle before you retrieve codes. By having a complete account of your vehicle's current problem(s), you will be able to systematically pinpoint the problem(s) by comparing your answers to the fault codes you retrieve. You can also provide this information to your mechanic to assist in diagnosis and help avoid costly and unnecessary repairs. It is important for you to complete this form to help you and/or your mechanic have a clear understanding of your vehicle's problems.

Name:

Date:

Vin*:

Year:

Make:

Model:

Engine Size:

Vehicle Mileage:

*VIN: Vehicle Identification Number, found at the base of the windshield on a metallic plate, or at the driver door latch area (consult your vehicle owner's manual for location).

Transmission:

❑Automatic ❑Manual Please check all applicable items in each category.

Describe The Problem:

Preparation for Testing

Preliminary Vehicle Diagnosis Worksheet

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15

When Did You First Notice The Problem:

❑Just Started ❑Started Last Week ❑Started Last Month ❑Other:

List Any Repairs Done In The Past Six Months:

Problems Starting

Engine Quits Or Stalls

Idling Conditions

Running Conditions

❑No symptoms ❑Will not crank ❑Cranks, but will not start ❑Starts, but takes a long time ❑No symptoms ❑Right after starting ❑When shifting into gear ❑During steady-speed driving ❑Right after vehicle comes to a stop ❑While idling ❑During acceleration ❑When parking ❑No symptoms ❑Is too slow at all times ❑Is too fast ❑Is sometimes too fast or too slow ❑Is rough or uneven ❑Fluctuates up and down ❑No symptoms ❑Runs rough ❑Lacks power ❑Bucks and jerks ❑Poor fuel economy ❑Hesitates or stumbles on accelerations ❑Backfires ❑Misfires or cuts out ❑Engine knocks, pings or rattles ❑Surges ❑Dieseling or run-on

Preparation for Testing

Preliminary Vehicle Diagnosis Worksheet

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AUTOMATIC TRANSMISSION PROBLEMS (if applicable)

Problem Occurs

❑Morning ❑Afternoon ❑ Anytime

Engine Temperature When Problem Occurs

❑Cold ❑Warm ❑ Hot

Driving Conditions When Problem Occurs

Driving Habits

Gasoline Used

Weather Conditions When Problem Occurs

Check Engine Light / Dash Warning Light

❑Sometimes ON ❑Always ON ❑ Never ON

Peculiar Smells

Strange Noises

❑Short - less than 2 miles ❑2 - 10 miles ❑Long - more than 10 miles ❑Stop and go ❑While turning ❑While braking ❑At gear engagement ❑With A/C operating ❑With headlights on ❑During acceleration ❑Mostly driving downhill ❑Mostly driving uphill ❑Mostly driving level ❑Mostly driving curvy roads ❑Mostly driving rough roads ❑Mostly city driving ❑Highway ❑Park vehicle inside ❑Park vehicle outside ❑Drive less than 10 miles per day ❑Drive 10 to 50 miles per day ❑Drive more than 50 miles per day ❑87 Octane ❑89 Octane ❑91 Octane ❑More than 91 Octane

❑32 - 55° F (0 - 13° C)

❑Below freezing (32° F / 0° C) ❑Above 55° F (13° C) ❑"Hot" ❑Sulfur ("rotten egg") ❑Burning rubber ❑Gasoline ❑Burning oil ❑Electrical ❑Rattle ❑Knock ❑Squeak ❑Other ❑No symptoms ❑Shifts too early or too late ❑Changes gear incorrectly ❑Vehicle does not move when in gear ❑Jerks or bucks

Using Code Reader

Code Retrieval Procedure

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Code Retrieval Procedure

Never replace a part based only on the DTC definition. Each DTC has a set of testing procedures, instructions and flow charts that must be followed to confirm the location of the problem. This information is found in the vehicle's service manual. Always refer to the vehicle's service manual for detailed testing instructions. Check your vehicle thoroughly before performing any test. See Preparation for Testing on page 12 for details. ALWAYS observe safety precautions whenever working on a vehicle. See Safety Precautions on page 4 for more information.

Turn the ignition off.

Locate the vehicle's 16-pin Data Link

Connector (DLC). See page 7 for connector location. Some DLCs have a plastic cover that must be removed before connecting the Code Reader cable connector.

Turn the Code Reader off and connect the

Code Reader cable connector to the vehicle's DLC. The cable connector is keyed and will only fit one way. ■If you have problems connecting the cable connector to the DLC, rotate the connector 180° and try again. If you still have problems, check the DLC on the vehicle and on the Code Reader. Refer to your vehicle's service manual to properly check the vehicle's DLC. ■After the Code Reader's cable is successfully connected to the vehicle’s DLC, the Code Reader automatically turns “On” and establishes com- munication with the vehicle’s computer. The word “rEAd” will show on the LCD display. Proceed to step 4. Retrieving and using Diagnostic Trouble Codes (DTCs) for troubleshooting vehicle operation is only one part of an overall diagnostic strategy.

Using Code Reader

Code Retrieval Procedure

18

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■If the Code Reader does not turn on automatically when connected to the vehicle, it indicates that there is no power at the vehicle's DLC. Check your fuse panel and replace any burned-out fuses. If replacing the fuse(s) does not correct the problem, consult your vehicle's repair manual to locate the proper computer (PCM) fuse/circuit. Perform any necessary repairs before continuing.

Turn the ignition on. DO NOT start the

engine. If the ignition key is not turned "ON" within 10 seconds after the Code Reader is connected to a vehicle, an “Error” mes- sage will show on the Code Reader's LCD display. At times, an error message may display after you turn the ignition key on. If this happens, wait for the Code Reader to automatically re-link to the vehicle's computer. ■After 10-60 seconds, the Code Reader will retrieve and display any diagnostic information (trouble codes, Monitor status) stored in the vehicle's computer memory. ■If the Code Reader does not retrieve vehicle diagnostic information and keeps cycling between "rEAd" and “Error” on the LCD display, it indicates that the Code Reader is unable to communicate with vehicle's computer. Do the following:

Turn the ignition key off, wait 10 seconds and turn the key

back on to reset the computer.

Make sure your vehicle is OBD 2 compliant. See VEHICLES

COVERED on page 6 for vehicle compliance verification information. If the Code Reader is interrupted or disconnected during code retrieval procedure, the screen will display "Error".

Read and interpret the Diagnostic Trouble Codes using the LCD

display and the green, yellow and red LEDs. The green, yellow and red LEDs are used (with the LCD display) as visual aids to make it easier for the user to determine engine system conditions.

Using Code Reader

Code Retrieval Procedure

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19 ■Green LED - Indicates that all engine systems are "OK" and running normally. All monitors on the vehicle are active and are performing their diagnostic testing, and no trouble codes are present. A zero will show on Code Reader’s LCD display for further confirmation. ■Yellow LED - Indicates one of the following conditions: PENDING CODE PRESENT - If the yellow LED is lit, it may indicate the existence of a pending code. Check Code Reader’s LCD display for confirmation. A pending code is confirmed by the presence of a numeric code and the word PENDING on Code Reader’s LCD display. If no pending code is shown, the yellow LED indicates Monitor Status (see the following). See DIAGNOSTIC TROUBLE CODES (DTCs) on page 35 for more information about pending codes. MONITOR STATUS - If Code Reader’s LCD display shows a zero (indicating there are no DTCs present in the vehicle's computer), but the yellow LED is lit, it indicates a "Monitor Has Not Run" status. This means that some of the Monitors on the vehicle have not yet finished their diagnostic self-testing. This condition is confirmed by one or more blinking Monitor icons on the LCD display. A blinking Monitor icon means the Monitor has not yet run and finished its diagnostic self-testing. All Monitor icons that are solid have completed their diagnostic self-testing. For more information on Monitors, see “OBD 2 Monitors” on page 38. ■Red LED - Indicates there is a problem with one or more of the vehicle's systems. The red LED is also used to show that DTC(s) are present (displayed on Code Reader’s LCD display). In this case, the Multifunction Indicator (Check Engine) lamp on the vehicle's instrument panel will light steady on. Code Reader will automatically re-link to the vehicle's computer every 15 seconds to refresh the data being retrieved. When data is being refreshed, a single beep will sound, and "rEAd" will be shown on the LCD display for 5-6 seconds. Code Reader will then beep twice and return to displaying codes. This action repeats as long as Code Reader is in communication with the vehicle's computer. Code Reader will display a code only if codes are present in the vehicle's computer memory. If no codes are present, a "0" will be displayed. Code Reader is capable of retrieving and storing up to 32 codes in memory, for immediate or later viewing.

Using Code Reader ERASING DIAGNOSTIC TROUBLE CODES (DTCs) 20

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If more than one code is present, press and release the SCROLL

button, as necessary, to display additional codes. ■Whenever the SCROLL function is used to view additional codes, Code Reader's communication link with the vehicle's computer disconnects. To re-establish communication, press the LINK button again. Freeze Frame data is always associated with the “Priority Code” (identified as Code #1 in the Code Reader’s display). If the FREEZE FRAME icon is lit when the “Priority Code” (Code #1) is displayed on the Code Reader’s screen, it indicates that there is Freeze Frame data associated with this code, and the vehicle’s computer has saved it in its memory.

To prolong battery life, Code Reader automatically turns "Off"

approximately one minute after it is disconnected from the vehicle. Retrieved codes remain in Code Reader's memory, and may be viewed at any time by turning the unit "On.” If Code Reader's batteries are removed, or if Code Reader is re-linked to a vehicle to retrieve codes, any codes currently in its memory are automatically cleared. Refer to page 45 for Diagnostic Trouble Code definitions. Match the retrieved DTC(s) with those listed. Read the associated definition(s), and see the vehicle's service manual for further evaluation. ERASING DIAGNOSTIC TROUBLE CODES (DTCs) When Code Reader’s ERASE function is used to erase the DTCs from the vehicle's on-board computer, "Freeze Frame" data and manufacturer-specific enhanced data are also erased. If you plan to take the vehicle to a Service Center for repair, DO NOT erase the codes from the vehicle's computer. If the codes are erased, valuable information that might help the technician troubleshoot the problem will also be erased. Erase DTCs from the computer's memory as follows: When DTCs are erased from the vehicle's computer memory, the I/M Readiness Monitor Status program resets status of all the Monitors to a not run "flashing" condition. To set all of the Monitors to a DONE status, an OBD 2 Drive Cycle must be performed. Refer to your vehicle's service manual for information on how to perform an OBD 2 Drive Cycle for the vehicle under test.

Using Code Reader

I/M Readiness Testing

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21

Perform the Code Retrieval Procedure

as described on page 17.

Wait until the codes are displayed on

the Code Reader's LCD and then proceed to step 3.

Press and release Code Reader 's

Erase

button. The LCD display will indicate "SurE" for your confirmation. ■If you change your mind and do not wish to erase the codes, press the

Link

button to return to the code retrieval function. ■If you wish to continue, press and release the ERASE button again. ■The LCD will display "donE" for a few seconds, and then will auto- matically enter the re-link (read) mode to confirm that all retrievable information including DTCs, have been successfully erased/cleared from the computer memory. ■If the erase was successful, the LCD display will show zero (0) codes, and some of the Monitors icons will be flashing to indicate that the Monitors have been re-set. Erasing DTCs does not fix the problem(s) that caused the code(s) to be set. If proper repairs to correct the problem that caused the code(s) to be set are not made, the code(s) will appear again (and the check engine light will illuminate) as soon as the vehicle is driven long enough for its Monitors to complete their testing.

I/M Readiness Testing

I/M is an Inspection and Maintenance program legislated by the Government to meet federal clean-air standards. The program requires that a vehicle be taken periodically to an Emissions Station for an "Emissions Test" or "Smog Check,” where the emissions-related components and systems are inspected and tested for proper operation. Emissions Tests are generally performed once a year, or once every two years.

Using Code Reader

I/M Readiness Testing

22

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On OBD 2 systems, the I/M program is enhanced by requiring vehicles to meet stricter test standards. One of the tests instituted by the Federal Government is called I/M 240. On I/M 240, the vehicle under test is driven under different speeds and load conditions on a dynamometer for 240 seconds, while the vehicle's emissions are measured. Emissions tests vary depending on the geographic or regional area in which the vehicle is registered. If the vehicle is registered in a highly urbanized area, the I/M 240 is probably the type of test required. If the vehicle is registered in a rural area, the stricter “dynamometer type” test may not be required. I/M Readiness Monitors I/M Readiness shows whether the various emissions-related systems on the vehicle are operating properly and are ready for Inspection and Maintenance testing. State and Federal Governments enacted Regulations, Procedures and Emission Standards to ensure that all emissions-related components and systems are continuously or periodically monitored, tested and diagnosed whenever the vehicle is in operation. It also requires vehicle manufacturers to automatically detect and report any problems or faults that may increase the vehicle's emissions to an unacceptable level. The vehicle's emissions control system consists of several components or sub-systems (Oxygen Sensor, Catalytic Converter, EGR, Fuel System, etc.) that aid in reducing vehicle emissions. To have an efficient Vehicle Emission Control System, all the emissions-related components and systems must work correctly whenever the vehicle is in operation. To comply with State and Federal Government regulations, vehicle manufacturers designed a series of special computer programs called "Monitors" that are programmed into the vehicle's computer. Each of these Monitors is specifically designed to run tests and diagnostics on a specific emissions-related component or system (Oxygen Sensor, Catalytic Converter, EGR Valve, Fuel System, etc.) to ensure their proper operation. Currently, there are a maximum of eleven Monitors available for use.

Using Code Reader

I/M Readiness Testing

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23 Each Monitor has a specific function to test and diagnose only its designated emissions- related component or system. The names of the Monitors (Oxygen Sensor Monitor, Catalyst Monitor, EGR Monitor, Misfire Monitor, etc.) describe which component or system each Monitor is designed to test and diagnose. Emissions Inspection and Maintenance (I/M) Readiness Monitor Status Information I/M Readiness Monitor Status shows which of the vehicle's Monitors have run and completed their diagnosis and testing, and which ones have not yet run and completed testing and diagnosis of their designated sections of the vehicle's emissions system. ■If a Monitor was able to meet all the conditions required to enable it to perform the self-diagnosis and testing of its assigned engine system, it means the monitor "HAS RUN.” ■If a Monitor has not yet met all the conditions required for it to perform the self-diagnosis and testing of its assigned engine system; it means the Monitor "HAS NOT RUN.” The Monitor Run/Not Run status does not show whether or not a problem exists in a system. Monitor status only indicates whether a particular Monitor has or has not run and performed the self-diagnosis and testing of its associated system. Performing I/M Readiness Quick Check When a vehicle first comes from the factory, all Monitors indicate a DONE status. This indicates that all Monitors have run and completed their diagnostic testing. The DONE status remains in the computer's memory, unless the Diagnostic Trouble Codes are erased or the vehicle's computer memory is cleared. Code Reader allows you to retrieve Monitor/System Status Information to help you determine if the vehicle is ready for an Emissions Test (Smog Check). In addition to retrieving Diagnostic Trouble Codes, Code Reader also retrieves Monitor Run/Not Run To learn more about Emissions Inspection and Maintenance (I/M) Readiness Monitors, see OBD 2 MONITORS on page 38.

Using Code Reader

I/M Readiness Testing

24

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status. This information is very important since different areas of the state/country have different emissions laws and regulations concerning Monitor Run/Not Run status. Before an Emissions Test (Smog Check) can be performed, your vehicle must meet certain rules, requirements and procedures legislated by the Federal and state (country) governments where you live.

In most areas, one of the requirements that must be met before a

vehicle is allowed to be Emissions Tested (Smog Checked) is that the vehicle does not have any Diagnostic Trouble Codes present (with the exception of PENDING Diagnostic Trouble Codes).

In addition to the requirement that no Diagnostic Trouble Codes be

present, some areas also require that all the Monitors that a particular vehicle supports indicate a "Has Run" status condition before an Emissions Check may be performed.

Other areas may only require that some (but not all) Monitors

indicate a "Has Run" status before an Emissions Test (Smog Check) may be performed. Monitors with a "Has Run" status indicate that all the required conditions they needed to perform diagnosis and testing of their assigned engine area (system) have been met, and all diagnostic testing has completed successfully. Monitors with a "Has Not Run" status have not yet met the conditions they need to perform diagnosis and testing of their assigned engine area (system), and have not been able to perform diagnostic testing on that system. The green, yellow and red LEDs provide a quick way to help you determine if a vehicle is ready for an Emissions Test (Smog Check). Follow the instructions below to perform the Quick Check. Perform the Code Retrieval Procedure as described on page 17, then interpret the LED indications as follows: Interpreting I/M Readiness Test Results

GREEN LED - Indicates that all engine

systems are "OK" and operating normally (all Monitors supported by the vehicle have run and performed their self-diagnostic testing). The vehicle is ready for an Emissions Test (Smog Check), and there is a good possibility that it can be certified.

Using Code Reader

I/M Readiness Testing

Obd 2

25

YELLOW LED - Determine from the Code Retrieval Procedure

(page 17) which of the two possible conditions is causing the yellow LED to light. ■If a "PENDING" Diagnostic Trouble Code is causing the yellow LED to light, it is possible that the vehicle will be allowed to be tested for emissions and certified. Currently, most areas (states / countries) will allow an Emissions Test (Smog Check) to be performed if the only code in the vehicle's computer is a "PENDING" Diagnostic Trouble Code. ■If no running Monitors are causing the yellow LED to light, then the issue of the vehicle being ready for an Emissions Test (Smog Check) depends on the emissions regulations and laws of your local area.

Some areas require that all Monitors indicate a "Has Run"

status before they allow an Emissions Test (Smog Check) to be performed. Other areas only require that some, but not all, Monitors have run their self-diagnostic testing before an Emissions Test (Smog Check) may be performed. From the code retrieval procedure, determine the status of each Monitor (a solid Monitor icon shows Monitor "Has Run" status, a flashing Monitor icon indicates "Has Not Run" status). Take this information to an emissions professional to determine (based on your test results) if your vehicle is ready for an Emissions Test (Smog Check).

RED LED - Indicates there is a problem with one or more of the

vehicle's systems. A vehicle displaying a red LED is definitely not ready for an Emissions Test (Smog Check). The red LED is also an indication that there are Diagnostic Trouble Code(s) present (displayed on the Code Reader's screen). The Multifunction Indicator (Check Engine) Lamp on the vehicle's instrument panel will light steady on. The problem that is causing the red LED to light must be repaired before an Emissions Test (Smog Check) can be performed. It is also suggested that the vehicle be inspected/repaired before driving the vehicle further. If the Red LED was obtained, there is a definite problem present in the system(s). In these cases, you have the following options.

Using Code Reader

I/M Readiness Testing

26

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■Repair the vehicle yourself. If you are going to perform the repairs yourself, proceed by reading the vehicle service manual and following all its procedures and recommendations. ■Take the vehicle to a professional to have it serviced. The problem(s) causing the red LED to light must be repaired before the vehicle is ready for an Emissions Test (Smog Check). Using the I/M Readiness Monitor Status to Confirm a Repair The I/M Readiness Monitor Status function can be used (after repair of a fault has been performed) to confirm that the repair has been performed correctly, and/or to check for Monitor Run Status. Use the following procedure to determine I/M Readiness Monitor Status:

Using retrieved Diagnostic Trouble Codes (DTCs) and code

definitions as a guide, and following manufacturer's repair procedures, repair the fault or faults as instructed.

After the fault or faults have been repaired, connect Code Reader

to the vehicle's DLC and erase the code or codes from the vehicle's computer memory. ■See page 20 for procedures to erase DTCs from the vehicle's on-board computer. ■Write the codes down on a piece of paper for reference before erasing.

After the erase procedure is performed, most of the Monitor icons

on the Code Reader's LCD display will be flashing. Leave Code Reader connected to the vehicle, and perform a Trip Drive Cycle for each "flashing" Monitor: Misfire, Fuel and Comprehensive Component Monitors run continuously and their icons will always be on solid, even after the erase function is performed. ■Each DTC is associated with a specific Monitor. Consult the vehicle's service manual to identify the Monitor (or Monitors) associated with the faults that were repaired. Follow the manufacturer's procedures to perform a Trip Drive Cycle for the appropriate Monitors. ■While observing the Monitor icons on Code Reader's LCD display, perform a Trip Drive Cycle for the appropriate Monitor or Monitors. If the vehicle needs to be driven in order to perform a Trip Drive Cycle, ALWAYS have a second person help you. One person should drive the vehicle while the other person observes the Monitor icons on Code Reader for Monitor RUN status. Trying to drive and observe Code Reader at the same time is dangerous, and could cause a serious traffic accident.

Using Code Reader

What’S Next?

Obd 2

27

When a Monitor's Trip Drive Cycle is performed properly, the

Monitor icon on Code Reader's LCD display changes from "flashing" to "solid,” indicating that the Monitor has run and finished its diagnostic testing. ■If, after the Monitor has run, the MIL on the vehicle's dash is not lit, and no codes associated with that particular Monitor are present in the vehicle's computer, the repair was successful. ■If, after the Monitor has run, the MIL on the vehicle's dash lights and/or a DTC associated with that Monitor is present in the vehicle's computer, the repair was unsuccessful. Refer to the vehicle's service manual and recheck repair procedures.

What’S Next?

Use the green, yellow and red LEDs as a “quick check” of the status of a vehicle’s engine control and emissions systems. When checking your vehicle for road trip readiness: ■A GREEN LED indicates that all engine systems are "OK" and operating normally. You can feel confident that the vehicle is mechanically sound and suitable for travel. Always BE SURE to check fluid levels, tire pressure, etc., before any prolonged travel. ■A YELLOW LED indicates a “Pending” DTC is present and/or some of the vehicle's emission monitors have not run their diagnostic testing. Further testing and evaluation may be needed to determine your vehicle’s“road trip readiness. ■A RED LED indicates there is a problem with one or more of the vehicle's systems. The vehicle should be inspected/repaired before driving the vehicle further. When checking to see if your vehicle is ready for an Emissions Test (Smog Check): ■A GREEN LED indicates that all engine systems are "OK" and operating normally. The vehicle is ready for an Emissions Test (Smog Check), and there is a good possibility that it can be certified. ■A YELLOW LED indicates a “Pending” DTC is present and/or some of the vehicle's emission monitors have not run their diagnostic testing. The issue of the vehicle being ready for an Emissions Test (Smog Check) depends on the emissions regulations and laws of your local area. Have an emissions professional review your test results to determine if your vehicle is ready for an Emissions Test (Smog Check). ■A RED LED indicates there is a problem with one or more of the vehicle's systems. The vehicle is most likely not ready for an Emissions Test (Smog Check). The problem that is causing the

Using Code Reader

What’S Next?

28

Obd 2

red LED to light must be repaired before an Emissions Test (Smog Check) can be performed. It is also suggested that the vehicle be inspected/repaired before driving the vehicle further. When inspecting a used vehicle before buying or selling: ■A GREEN LED indicates that all emissions-related systems are "OK" and operating normally. You can feel confident that these vehicle systems are mechanically sound. Always BE SURE to check other vehicle systems NOT covered by Code Reader (transmission, brakes, etc.) as well as the vehicle’s service record before buying or selling a vehicle. ■A YELLOW LED indicates a “Pending” DTC is present and/or some of the vehicle's emission monitors have not run their diagnostic testing. Further testing and evaluation may be needed to determine the vehicle’s actual condition. ■A RED LED indicates there is a problem with one or more of the vehicle's systems. It is recommended that you take the vehicle qualified service technician for further diagnosis. If no codes were retrieved and/or the green lights, and all your vehicle’s Monitors show a “Has Run” status, you’re “good to go.” You can feel confident that: ■The systems and components monitored by your vehicle’s on- board computer are in good working order and running properly. ■Your vehicle should pass an Emissions Test (Smog Check) without problem. If codes were retrieved and/or the yellow or red LEDs light, you can choose to: ■Fix the problem yourself: If you choose to fix the problem yourself, read and follow all of the vehicle service manual’s recommendations and procedures. ■Take your vehicle to an Automotive Service Center for repair: Take your vehicle, a copy of the completed Preliminary Vehicle Diagnosis Worksheet (see page 14) and codes retrieved to your technician for evaluation. This will show your technician that you are an informed motorist and will also assist him in pinpointing the location of the problem as a starting point for needed repairs. If the red LED lights after retrieving codes or performing an I/M Readiness inspection, it is suggested that the vehicle be inspected/repaired before driving the vehicle further.

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29 Learning More

Computer Engine Controls

Computer Engine Controls

The Introduction of Electronic Engine Controls As a result of increased air pollution (smog) in large cities, such as Los Angeles, the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA) set new regulations and air pollution standards to deal with the problem. To further complicate matters, the energy crisis of the early 1970s caused a sharp increase in fuel prices over a short period. As a result, vehicle manufacturers were not only required to comply with the new emissions standards, they also had to make their vehicles more fuel- efficient. Most vehicles were required to meet a miles-per-gallon (MPG) standard set by the U.S. Federal Government. Precise fuel delivery and spark timing are needed to reduce vehicle emissions. Mechanical engine controls in use at the time (such as ignition points, mechanical spark advance and the carburetor) responded too slowly to driving conditions to properly control fuel delivery and spark timing. This made it difficult for vehicle manufacturers to meet the new standards. A new Engine Control System had to be designed and integrated with the engine controls to meet the stricter standards. The new system had to: ■Respond instantly to supply the proper mixture of air and fuel for any driving condition (idle, cruising, low-speed driving, high-speed driving, etc.). ■Calculate instantly the best time to "ignite" the air/fuel mixture for maximum engine efficiency. ■Perform both these tasks without affecting vehicle performance or fuel economy. Vehicle Computer Control Systems can perform millions of calculations each second. This makes them an ideal substitute for the slower mechanical engine controls. By switching from mechanical to electronic engine controls, vehicle manufacturers are able to control fuel delivery and spark timing more precisely. Some newer Computer Control Systems also provide control over other vehicle functions, such as transmission, brakes, charging, body, and suspension systems. Electronic Computer Control Systems make it possible for vehicle manufacturers to comply with the tougher emissions and fuel efficiency standards mandated by State and Federal Governments.

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Learning More

Computer Engine Controls

The Basic Engine Computer Control System The on-board computer is the heart of the Computer Control System. The computer contains several programs with preset reference values for air/fuel ratio, spark or ignition timing, injector pulse width, engine speed, etc. Separate values are provided for various driving conditions, such as idle, low speed driving, high-speed driving, low load, or high load. The preset reference values represent the ideal air/fuel mixture, spark timing, transmission gear selection, etc., for any driving condition. These values are programmed by the vehicle manufacturer, and are specific to each vehicle model. Most on-board computers are located inside the vehicle behind the dashboard, under the passenger's or driver's seat, or behind the right kick panel. However, some manufacturers may still position it in the engine compartment. Vehicle sensors, switches, and actuators are located throughout the engine, and are connected by electrical wiring to the on-board computer. These devices include oxygen sensors, coolant temperature sensors, throttle position sensors, fuel injectors, etc. Sensors and switches are input devices. They provide signals representing current engine operating conditions to the computer. Actuators are output devices. They perform actions in response to commands received from the computer. The on-board computer receives information inputs from sensors and switches located throughout the engine. These devices monitor critical engine conditions such as coolant temperature, engine speed, engine load, throttle position, air/fuel ratio etc. The Computer Control System consists of an on-board computer and several related control devices (sensors, switches, and actuators).

Output Devices

Fuel Injectors Idle Air Control EGR Valve Ignition Module On-Board Computer

Input Devices

Coolant Temperature Sensor Throttle Position Sensor Fuel Injectors

Input Devices

Oxygen Sensors

Typical Computer

Control System

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31 Learning More

Computer Engine Controls

The computer compares the values received from these sensors with its preset reference values, and makes corrective actions as needed so that the sensor values always match the preset reference values for the current driving condition. The computer makes adjustments by commanding other devices such as the fuel injectors, idle air control, EGR valve or Ignition Module to perform these actions. Vehicle operating conditions are constantly changing. The computer continuously makes adjustments or corrections (especially to the air/fuel mixture and spark timing) to keep all the engine systems operating within the preset reference values. On-Board Diagnostics - First Generation (OBD 1) Beginning in 1988, California's Air Resources Board (CARB), and later the Environmental Protection Agency (EPA) required vehicle manufacturers to include a self- diagnostic program in their on-board computers. The program would be capable of identifying emissions-related faults in a system. The first generation of Onboard Diagnostics came to be known as OBD 1. OBD 1 is a set of self-testing and diagnostic instructions programmed into the vehicle's on-board computer. The programs are specifically designed to detect failures in the sensors, actuators, switches and wiring of the various vehicle emissions-related systems. If the computer detects a failure in any of these components or systems, it lights an indicator on the dashboard to alert the driver. The indicator lights only when an emissions-related problem is detected. The computer also assigns a numeric code for each specific problem that it detects, and stores these codes in its memory for later retrieval. These codes can be retrieved from the computer's memory with the use of a "Code Reader" or a "Scan Tool.” With the exception of some 1994 and 1995 vehicles, most vehicles from 1982 to 1995 are equipped with OBD 1 systems.

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Obd 2

Learning More

Computer Engine Controls

On-Board Diagnostics - Second Generation (OBD 2) In addition to performing all the functions of the OBD 1 System, the OBD 2 System has been enhanced with new Diagnostic Programs. These programs closely monitor the functions of various emissions-related components and systems (as well as other systems) and make this information readily available (with the proper equipment) to the technician for evaluation. The California Air Resources Board (CARB) conducted studies on OBD 1 equipped vehicles. The information that was gathered from these studies showed the following: ■A large number of vehicles had deteriorating or degraded emissions-related components. These components were causing an increase in emissions. ■Because OBD 1 systems only detect failed components, the degraded components were not setting codes. ■Some emissions problems related to degraded components only occur when the vehicle is being driven under a load. The emission checks being conducted at the time were not performed under simulated driving conditions. As a result, a significant number of vehicles with degraded components were passing Emissions Tests. ■Codes, code definitions, diagnostic connectors, communication protocols and emissions terminology were different for each manufacturer. This caused confusion for the technicians working on different make and model vehicles. To address the problems made evident by this study, CARB and the EPA passed new laws and standardization requirements. These laws required that vehicle manufacturers to equip their new vehicles with devices capable of meeting all of the new emissions standards and regulations. It was also decided that an enhanced on-board diagnostic system, capable of addressing all of these problems, was needed. This new system is known as "On-Board Diagnostics Generation Two (OBD 2).” The primary objective of the OBD 2 system is to comply with the latest regulations and emissions standards established by CARB and the EPA. The OBD 2 System is an enhancement of the OBD 1 System.

Obd 2

33 Learning More

Computer Engine Controls

The Main Objectives of the OBD 2 System are: ■To detect degraded and/or failed emissions-related components or systems that could cause tailpipe emissions to exceed by 1.5 times the Federal Test Procedure (FTP) standard. ■To expand emissions-related system monitoring. This includes a set of computer run diagnostics called Monitors. Monitors perform diagnostics and testing to verify that all emissions-related components and/or systems are operating correctly and within the manufacturer's specifications. ■To use a standardized Diagnostic Link Connector (DLC) in all vehicles. (Before OBD 2, DLCs were of different shapes and sizes.) ■To standardize the code numbers, code definitions and language used to describe faults. (Before OBD 2, each vehicle manufacturer used their own code numbers, code definitions and language to describe the same faults.) ■To expand the operation of the Malfunction Indicator Lamp (MIL). ■To standardize communication procedures and protocols between the diagnostic equipment (Scan Tools, Code Readers etc.) and the vehicle's on-board computer. OBD 2 Terminology The following terms and their definitions are related to OBD 2 systems. Read and reference this list as needed to aid in the understanding of OBD 2 systems. ■Powertrain Control Module (PCM) - The PCM is the OBD 2 accepted term for the vehicle's "on-board computer.” In addition to controlling the engine management and emissions systems, the PCM also participates in controlling the powertrain (transmission) operation. Most PCMs also have the ability to communicate with other computers on the vehicle (ABS, ride control, body etc.). ■Monitor - Monitors are "diagnostic routines" programmed into the PCM. The PCM utilizes these programs to run diagnostic tests, and to monitor operation of the vehicle's emissions-related components or systems to ensure they are operating correctly and within the vehicle's manufacturer specifications. Currently, up to eleven Monitors are used in OBD 2 systems. Additional Monitors will be added as the OBD 2 system is further developed. Not all vehicles support all eleven Monitors.

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Learning More

Computer Engine Controls

■Enabling Criteria - Each Monitor is designed to test and monitor the operation of a specific part of the vehicle's emissions system (EGR system, oxygen sensor, catalytic converter, etc.). A specific set of "conditions" or "driving procedures" must be met before the computer can command a Monitor to run tests on its related system. These "conditions" are known as "Enabling Criteria.” The requirements and procedures vary for each Monitor. Some Monitors only require the ignition key to be turned "On" for them to run and complete their diagnostic testing. Others may require a set of complex procedures, such as, starting the vehicle when cold, bringing it to operating temperature, and driving the vehicle under specific conditions before the Monitor can run and complete its diagnostic testing. ■Monitor Has/Has Not Run - The terms "Monitor has run" or "Monitor has not run" are used throughout this manual. "Monitor has run,” means the PCM has commanded a particular Monitor to perform the required diagnostic testing on a system to ensure the system is operating correctly (within factory specifications). The term "Monitor has not run" means the PCM has not yet commanded a particular Monitor to perform diagnostic testing on its associated part of the emissions system. ■Trip - A Trip for a particular Monitor requires that the vehicle is driven in such a way that all the "Enabling Criteria" for the Monitor to run and complete its diagnostic testing are met. The "Trip Drive Cycle" for a particular Monitor begins when the ignition key is turned "On.” It is successfully completed when all the "Enabling Criteria" for the Monitor to run and complete its diagnostic testing are met by the time the ignition key is turned "Off.” Since each of the eleven monitors is designed to run diagnostics and testing on a different part of the engine or emissions system, the "Trip Drive Cycle" needed for each individual Monitor to run and complete varies. ■OBD 2 Drive Cycle - An OBD 2 Drive Cycle is an extended set of driving procedures that takes into consideration the various types of driving conditions encountered in real life. These conditions may include starting the vehicle when it is cold, driving the vehicle at a steady speed (cruising), accelerating, etc. An OBD 2 Drive Cycle begins when the ignition key is turned "On" (when cold) and ends when the vehicle has been driven in such a way as to have all the "Enabling Criteria" met for all its applicable Monitors. Only those trips that provide the Enabling Criteria for all Monitors applicable to the vehicle to run and complete their individual diagnostic tests qualify as an OBD 2 Drive Cycle. OBD 2 Drive Cycle requirements vary from one model of vehicle to another. Vehicle manufacturers set these procedures. Consult your vehicle's service manual for OBD 2 Drive Cycle procedures.

Obd 2

35 Learning More DIAGNOSTIC TROUBLE CODES (DTCs) Do not confuse a "Trip" Drive Cycle with an OBD 2 Drive Cycle. A Trip Drive Cycle provides the "Enabling Criteria" for one specific Monitor to run and complete its diagnostic testing. An OBD 2 Drive Cycle must meet the "Enabling Criteria" for all Monitors on a particular vehicle to run and complete their diagnostic testing. ■Warm-up Cycle - Vehicle operation after an engine off period where engine temperature rises at least 40°F (22°C) from its temperature before starting, and reaches at least 160°F (70°C). The PCM uses warm-up cycles as a counter to automatically erase a specific code and related data from its memory. When no faults related to the original problem are detected within a specified number of warm-up cycles, the code is erased automatically. DIAGNOSTIC TROUBLE CODES (DTCs) Diagnostic Trouble Codes (DTCs) are meant to guide you to the proper service procedure in the vehicle's service manual. DO NOT replace parts based only on DTCs without first consulting the vehicle's service manual for proper testing procedures for that particular system, circuit or component. DTCs are alphanumeric codes that are used to identify a problem that is present in any of the systems that are monitored by the on-board computer (PCM). Each trouble code has an assigned message that identifies the circuit, component or system area where the problem was found. OBD 2 diagnostic trouble codes are made up of five characters: ■The 1st character is a letter. It identifies the "main system" where the fault occurred (Body, Chassis, Powertrain, or Network). ■The 2nd character is a numeric digit. It identifies the "type" of code (Generic or Manufacturer-Specific). Generic DTCs are codes that are used by all vehicle manufacturers. The standards for generic DTCs, as well as their definitions, are set by the Society of Automotive Engineers (SAE). Manufacturer-Specific DTCs are codes that are controlled by the vehicle manufacturer. The Federal Government does not require manufacturer-specific codes in order to comply with the new OBD 2 emissions standards. However, manufacturers are free to expand beyond the required codes to make their systems easier to diagnose. Diagnostic Trouble Codes (DTCs) are codes that identify a specific problem area.

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Learning More DIAGNOSTIC TROUBLE CODES (DTCs) ■The 3rd character is a numeric digit. It identifies the specific system or sub-system where the problem is located. ■The 4th and 5th characters are numeric digits. They identify the section of the system that is malfunctioning. DTCs and MIL Status When the vehicle's on-board computer detects a failure in an emissions-related component or system, the computer's internal diagnostic program assigns a diagnostic trouble code (DTC) that points to the system (and subsystem) where the fault was found. The diagnostic program saves the code in the computer's memory. It records a "Freeze Frame" of conditions present when the fault was found, and lights the Malfunction Indicator Lamp (MIL). Some faults require detection for two trips in a row before the MIL is turned on.

P 0 2 0 1

B

C

P

U

-

-

Body Chassis Powertrain Network

-

Generic Manufacturer Specific 0 1 Identifies what section of the system is malfunctioning Identifies the system where the problem is located: 1 2

3 4 5

6 7 8

-

-

-

-

Fuel and Air Metering Fuel and Air Metering (injector circuit malfunction only) Ignition System or Misfire Auxiliary Emission Control System Vehicle Speed Control and Idle Control System Computer Output Circuits Transmission Transmission

Obd 2 Dtc Example

P0201 - Injector Circuit Malfunction, Cylinder 1

Obd 2

37 Learning More DIAGNOSTIC TROUBLE CODES (DTCs) The "Malfunction Indicator Lamp" (MIL) is the accepted term used to describe the lamp on the dashboard that lights to warn the driver that an emissions-related fault has been found. Some manufacturers may still call this lamp a "Check Engine" or "Service Engine Soon” light. There are two types of DTCs used for emissions-related faults: Type "A" and Type "B.” Type "A" codes are "One-Trip" codes; Type "B" DTCs are usually Two-Trip DTCs. When a Type "A" DTC is found on the First Trip, the following events take place: ■The computer commands the MIL "On" when the failure is first found. ■If the failure causes a severe misfire that may cause damage to the catalytic converter, the MIL "flashes" once per second. The MIL continues to flash as long as the condition exists. If the condition that caused the MIL to flash is no longer present, the MIL will light "steady" On. ■A DTC is saved in the computer's memory for later retrieval. ■A "Freeze Frame" of the conditions present in the engine or emissions system when the MIL was ordered "On" is saved in the computer's memory for later retrieval. This information shows fuel system status (closed loop or open loop), engine load, coolant temperature, fuel trim value, MAP vacuum, engine RPM and DTC priority. When a Type "B" DTC is found on the First Trip, the following events take place: ■The computer sets a Pending DTC, but the MIL is not ordered "On.” "Freeze Frame" data is not recorded at this time. The Pending DTC is saved in the computer's memory for later retrieval. ■If the failure is found on the second consecutive trip, the MIL is ordered "On.” "Freeze Frame" data is saved in the computer's memory. ■If the failure is not found on the second Trip, the Pending DTC is erased from the computer's memory. The MIL will stay lit for both Type "A" and Type "B" codes until one of the following conditions occurs: ■If the conditions that caused the MIL to light are no longer present for the next three trips in a row, the computer automatically turns the MIL "Off" if no other emissions-related faults are present. However, the DTCs remain in the computer's memory for 40 warm-up cycles (80 warm-up cycles for fuel and misfire faults). The DTCs are automatically erased if the fault that caused them to be set is not detected again during that period.

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Obd 2 Monitors

■Misfire and fuel system faults require three trips with "similar conditions" before the MIL is turned "Off.” These are trips where the engine load, RPM and temperature are similar to the conditions present when the fault was first found. After the MIL has been turned off, DTCs, Freeze Frame data, and manufacturer-specific enhanced data stay in the computer's memory. This data can only be retrieved by using equipment such as a Scan Tool. ■Erasing the DTCs from the computer's memory can also turn off the MIL. See ERASING DIAGNOSTIC TROUBLE CODES (DTCs) on page 20, before erasing codes from the computer's memory. If a Code Reader or Scan Tool is used to erase the codes, Freeze Frame data as well as other manufacturer-specific enhanced data will also be erased.

Obd 2 Monitors

To ensure the correct operation of the various emissions-related components and systems, a diagnostic program was developed and installed in the vehicle's on-board computer. The program has several procedures and diagnostic strategies. Each procedure or diagnostic strategy is made to monitor the operation of, and run diagnostic tests on, a specific emissions-related component or system. These tests ensure the system is running correctly and is within the manufacturer's specifications. On OBD 2 systems, these procedures and diagnostic strategies are called "Monitors.” Currently, a maximum of eleven Monitors are used in OBD 2 systems. Additional monitors may be added as a result of Government regulations as the OBD 2 system grows and matures. Not all vehicles use all eleven Monitors. Monitor operation is either "Continuous" or "Non-Continuous,” depending on the specific monitor. Continuous Monitors Three of these Monitors are designed to constantly monitor their associated components and/or systems for proper operation. Continuous Monitors run constantly when the engine is running. The Continuous Monitors are:

Comprehensive Component Monitor (CCM)

Misfire Monitor

Fuel System Monitor

Non-Continuous Monitors The other eight Monitors are "non-continuous" Monitors. "Non- continuous" Monitors perform and complete their testing once per trip. The "non-continuous" Monitors are:

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39 Learning More

Obd 2 Monitors

Oxygen Sensor Monitor

Oxygen Sensor Heater Monitor

Catalyst Monitor

Heated Catalyst Monitor

EGR System Monitor

EVAP System Monitor

Secondary Air System Monitor

Air Conditioning (A/C) Monitor

The following provides a brief explanation of the function of each Monitor: ■Comprehensive Component Monitor (CCM) - This Monitor continuously checks all inputs and outputs from sensors, actuators, switches and other devices that provide a signal to the computer. The Monitor checks for shorts, opens, out of range value, functionality and “rationality.” Rationality: Each input signal is compared against all other inputs and against information in the computer's memory to see if it makes sense under the current operating conditions. Example: The signal from the throttle position sensor indicates the vehicle is in a wide- open throttle condition, but the vehicle is really at idle, and the idle condition is confirmed by the signals from all other sensors. Based on the input data, the computer determines that the signal from the throttle position sensor is not rational (does not make sense when compared to the other inputs). In this case, the signal would fail the rationality test. The CCM may be either a "One-Trip" or a "Two-Trip" Monitor, depending on the component. ■Fuel System Monitor - This Monitor uses a Fuel System Correction program, called Fuel Trim, inside the on-board computer. Fuel Trim is a set of positive and negative values that represent adding or subtracting fuel from the engine. This program is used to correct for a lean (too much air/not enough fuel) or rich (too much fuel/not enough air) air-fuel mixture. The program is designed to add or subtract fuel, as needed, up to a certain percent. If the correction needed is too large and exceeds the time and percent allowed by the program, a fault is indicated by the computer. The Fuel System Monitor may be a "One-Trip" or "Two-Trip" Monitor, depending on the severity of the problem.

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Obd 2 Monitors

■Misfire Monitor - This Monitor continuously checks for engine misfires. A misfire occurs when the air-fuel mixture in the cylinder does not ignite. The misfire Monitor uses changes in crankshaft speed to sense an engine misfire. When a cylinder misfires, it no longer contributes to the speed of the engine, and engine speed decreases each time the affected cylinder(s) misfire. The misfire Monitor is designed to sense engine speed fluctuations and determine from which cylinder(s) the misfire is coming, as well as how bad the misfire is. There are three types of engine misfires, Types 1, 2, and 3.

Type 1 and Type 3 misfires are two-trip monitor faults. If a fault

is sensed on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The MIL is not commanded on at this time. If the fault is found again on the second trip, under similar conditions of engine speed, load and temperature, the computer commands the MIL "On,” and the code is saved in its long term memory.

Type 2 misfires are the most severe type of misfire. When a Type

2 misfire is sensed on the first trip, the computer commands the MIL to light when the misfire is sensed. If the computer determines that a Type 2 misfire is severe , and may cause catalytic converter damage, it commands the MIL to "flash" once per second as soon as the misfire is sensed. When the misfire is no longer present, the MIL reverts to steady "On" condition. ■Catalyst Monitor - The catalytic converter is a device that is installed downstream of the exhaust manifold. It helps to oxidize (burn) the unburned fuel (hydrocarbons) and partially burned fuel (carbon monoxide) left over from the combustion process. To accomplish this, heat and catalyst materials inside the converter react with the exhaust gases to burn the remaining fuel. Some materials inside the catalytic converter also have the ability to store oxygen, and release it as needed to oxidize hydrocarbons and carbon monoxide. In the process, it reduces vehicle emissions by converting the polluting gases into carbon dioxide and water. The computer checks the efficiency of the catalytic converter by monitoring the oxygen sensors used by the system. One sensor is located before (upstream of) the converter; the other is located after (downstream of) the converter. If the catalytic converter loses its ability to store oxygen, the downstream sensor signal voltage becomes almost the same as the upstream sensor signal. In this case, the monitor fails the test. The Catalyst Monitor is a "Two-Trip" Monitor. If a fault is found on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The computer does not command the MIL on at this time. If the fault is sensed again on the second trip, the computer commands the MIL "On" and saves the code in its long- term memory.

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Obd 2 Monitors

■Heated Catalyst Monitor - Operation of the "heated" catalytic converter is similar to the catalytic converter. The main difference is that a heater is added to bring the catalytic converter to its operating temperature more quickly. This helps reduce emissions by reducing the converter's down time when the engine is cold. The Heated Catalyst Monitor performs the same diagnostic tests as the catalyst Monitor, and also tests the catalytic converter's heater for proper operation. This Monitor is also a "Two-Trip" Monitor. ■Exhaust Gas Recirculation (EGR) Monitor - The Exhaust Gas Recirculation (EGR) system helps reduce the formation of Oxides of Nitrogen during combustion. Temperatures above 2500°F cause nitrogen and oxygen to combine and form Oxides of Nitrogen in the combustion chamber. To reduce the formation of Oxides of Nitrogen, combustion temperatures must be kept below 2500°F. The EGR system recirculates small amounts of exhaust gas back into the intake manifold, where it is mixed with the incoming air/fuel mixture. This reduces combustion temperatures by up to 500°F. The computer determines when, for how long, and how much exhaust gas is recirculated back to the intake manifold. The EGR Monitor performs EGR system function tests at preset times during vehicle operation. The EGR Monitor is a "Two-Trip" Monitor. If a fault is found on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The computer does not command the MIL on at this time. If the fault is sensed again on the second trip, the computer commands the MIL "On,” and saves the code in its long- term memory. ■Evaporative System (EVAP) Monitor - OBD 2 vehicles are equipped with a fuel Evaporative system (EVAP) that helps prevent fuel vapors from evaporating into the air. The EVAP system carries fumes from the fuel tank to the engine where they are burned during combustion. The EVAP system may consist of a charcoal canister, fuel tank cap, purge solenoid, vent solenoid, flow monitor, leak detector and connecting tubes, lines and hoses. Fumes are carried from the fuel tank to the charcoal canister by hoses or tubes. The fumes are stored in the charcoal canister. The computer controls the flow of fuel vapors from the charcoal canister to the engine via a purge solenoid. The computer energizes or de- energizes the purge solenoid (depending on solenoid design). The purge solenoid opens a valve to allow engine vacuum to draw the fuel vapors from the canister into the engine where the vapors are burned. The EVAP Monitor checks for proper fuel vapor flow to the engine, and pressurizes the system to test for leaks. The computer runs this Monitor once per trip. The EVAP Monitor is a "Two-Trip" Monitor. If a fault is found on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The computer does not command the MIL on at this time. If the fault is sensed again on the second trip, the PCM com- mands the MIL "On,” and saves the code in its long-term memory.

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Obd 2 Monitors

■Air Conditioning (A/C) Monitor - The A/C Monitor senses leaks in air conditioning systems that utilize R-12 refrigerant. Vehicle manufacturers have been given two options:

Use R-12 refrigerant in their A/C systems, and integrate an A/C

Monitor in the OBD 2 systems of these vehicles to detect for refrigerant leaks; or

Use R-134 refrigerant instead of R12. The A/C Monitor is not

required on these vehicles. To date, all vehicle manufacturers have opted to use R-134 in their A/C systems. As a result, this Monitor has not yet been implemented. ■Oxygen Sensor Heater Monitor - The Oxygen Sensor Heater Monitor tests the operation of the oxygen sensor's heater. There are two modes of operation on a computer-controlled vehicle: "open-loop" and "closed-loop.” The vehicle operates in open-loop when the engine is cold, before it reaches normal operating temperature. The vehicle also goes to open-loop mode at other times, such as heavy load and full throttle conditions. When the vehicle is running in open-loop, the oxygen sensor signal is ignored by the computer for air/fuel mixture corrections. Engine efficiency during open-loop operation is very low, and results in the production of more vehicle emissions. Closed-loop operation is the best condition for both vehicle emissions and vehicle operation. When the vehicle is operating in closed-loop, the computer uses the oxygen sensor signal for air/fuel mixture corrections. In order for the computer to enter closed-loop operation, the oxygen sensor must reach a temperature of at least 600°F. The oxygen sensor heater helps the oxygen sensor reach and maintain its minimum operating temperature (600° F) more quickly, to bring the vehicle into closed-loop operation as soon as possible. The Oxygen Sensor Heater Monitor is a "Two-Trip" Monitor. If a fault is found on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The computer does not command the MIL on at this time. If the fault is sensed again on the second trip, the computer commands the MIL "On,” and saves the code in its long-term memory. ■Oxygen Sensor Monitor - The Oxygen Sensor monitors how much oxygen is in the vehicle's exhaust. It generates a varying voltage of up to one volt, based on how much oxygen is in the exhaust gas, and sends the signal to the computer. The computer uses this signal to make corrections to the air/fuel mixture. If the exhaust gas has a large amount of oxygen (a lean air/fuel mixture), the oxygen sensor generates a "low" voltage signal. If the exhaust gas has very little oxygen (a rich mixture condition), the oxygen sensor generates a "high" voltage signal. A 450mV signal indicates the most efficient, and least polluting, air/fuel ratio of 14.7 parts of air to one part of fuel.

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Obd 2 Monitors

The oxygen sensor must reach a temperature of at least 600- 650°F, and the engine must reach normal operating temperature, for the computer to enter into closed-loop operation. The oxygen sensor only functions when the computer is in closed-loop. A properly operating oxygen sensor reacts quickly to any change in oxygen content in the exhaust stream. A faulty oxygen sensor reacts slowly, or its voltage signal is weak or missing. The oxygen sensor is a "Two-Trip" monitor. If a fault is found on the first trip, the computer temporarily saves the fault in its memory as a Pending Code. The computer does not command the MIL on at this time. If the fault is sensed again on the second trip, the computer commands the MIL "On,” and saves the code in its long- term memory. ■Secondary Air System Monitor - When a cold engine is first started, it runs in open-loop mode. During open-loop operation, the engine usually runs rich. A vehicle running rich wastes fuel and creates increased emissions, such as carbon monoxide and some hydrocarbons. A Secondary Air System injects air into the exhaust stream to aid catalytic converter operation:

It supplies the catalytic converter with the oxygen it needs to

oxidize the carbon monoxide and hydrocarbons left over from the combustion process during engine warm-up.

The extra oxygen injected into the exhaust stream also helps

the catalytic converter reach operating temperature more quickly during warm-up periods. The catalytic converter must heat to operating temperature to work properly. The Secondary Air System Monitor checks for component integrity and system operation, and tests for faults in the system. The computer runs this Monitor once per trip. The Secondary Air System Monitor is a "Two-Trip" monitor. If a fault is found on the first trip, the computer temporarily saves this fault in its memory as a Pending Code. The computer does not command the MIL on at this time. If the fault is sensed again on the second trip, the computer commands the MIL "On,” and saves the code in its long-term memory.

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Obd 2 Monitors

OBD 2 Reference Table The table below lists current OBD 2 Monitors, and indicates the following for each Monitor: A Monitor Type (how often does the Monitor run; Continuous or Once per trip) B Number of trips needed, with a fault present, to set a pending DTC C Number of consecutive trips needed, with a fault present, to command the MIL “On” and store a DTC D Number of trips needed, with no faults present, to erase a Pending

Dtc

E Number and type of trips or drive cycles needed, with no faults present, to turn off the MIL F Number of warm-up periods needed to erase the DTC from the computer’s memory after the MIL is turned off Name of Monitor

A

B

C

D

E

F

Comprehensive Continuous 1 2 1 3 40 Component Monitor Misfire Monitor Continuous 1 2 1 3 - similar 80 (Type 1 and 3) conditions Misfire Monitor Continuous 1 3 - similar 80 (Type 2) conditions Fuel System Continuous 1 1 or 2 1 3 - similar 80 Monitor conditions Catalytic Converter Once per 1 2 1 3 trips 40 Monitor trip Oxygen Sensor Once per 1 2 1 3 trips 40 Monitor trip Oxygen Sensor Once per 1 2 1 3 trips 40 Heater Monitor trip Exhaust Gas Once per 1 2 1 3 trips 40 Recirculation (EGR) trip Monitor Evaporative Once per 1 2 1 3 trips 40 Emissions Controls trip Monitor Secondary Air Once per 1 2 1 3 trips 40 System (AIR) trip Monitor

DTC Definitions

Diagnostic Trouble Code Definitions

Obd 2

45

Diagnostic Trouble Code Definitions

This section provides the most complete lists of DTC definitions available at the time of publication. OBD 2 is an evolving system; new codes and definitions are added as the system grows. ALWAYS check your vehicle's service manual for code definitions that are not listed here.This section contains both "Generic" and "Manufacturer Specific" DTC definitions: • OBD 2 Powertrain "Generic" DTC Definitions apply to all makes and models of import and domestic vehicles that are "OBD 2 COMPLIANT.” These DTCs always start with "P0.” • OBD 2 Powertrain "Manufacturer Specific" DTC Definitions apply only to vehicles made by a specific manufacturer. These DTCs always start with "P1.” Some codes may have more than one definition. BE SURE to use the correct definition for your vehicle make, model and year. This manual provides "Manufacturer Specific" DTC definitions for CHRYSLER, FORD, GENERAL MOTORS, HONDA and TOYOTA only. For DTC definitions that are not in these lists, and/or for Body, Chassis and Network DTC definitions, reference your vehicle's service manual.

DTC Definitions

Generic (P0010 - P0057)

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Obd 2

Generic Dtc Definitions

Code Definition

P0010

"A" Camshaft Position - Actuator Circuit (Bank 1)

P0011

"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0012

"A" Camshaft Position - Timing Over-Retarded (Bank 1)

P0013

"B" Camshaft Position - Actuator Circuit (Bank 1)

P0014

"B" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0015

"B" Camshaft Position - Timing Over-Retarded (Bank 1)

P0020

"A" Camshaft Position - Actuator Circuit (Bank 2)

P0021

"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

P0022

"A" Camshaft Position - Timing Over-Retarded (Bank 2)

P0023

"B" Camshaft Position - Actuator Circuit (Bank 2)

P0024

"B" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

P0025

"B" Camshaft Position - Timing Over-Retarded (Bank 2)

P0030

HO2S Heater Control Circuit (Bank 1 Sensor 1)

P0031

HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

P0032

HO2S Heater Control Circuit High (Bank 1 Sensor 1)

P0033

Turbo Charger Bypass Valve Control Circuit

P0034

Turbo Charger Bypass Valve Control Circuit Low

P0035

Turbo Charger Bypass Valve Control Circuit High

P0036

HO2S Heater Control Circuit (Bank 1 Sensor 2)

P0037

HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

P0038

HO2S Heater Control Circuit High (Bank 1 Sensor 2)

P0042

HO2S Heater Control Circuit (Bank 1 Sensor 3)

P0043

HO2S Heater Control Circuit Low (Bank 1 Sensor 3)

P0044

HO2S Heater Control Circuit High (Bank 1 Sensor 3)

P0050

HO2S Heater Control Circuit (Bank 2 Sensor 1)

P0051

HO2S Heater Control Circuit Low (Bank 2 Sensor 1)

P0052

HO2S Heater Control Circuit High (Bank 2 Sensor 1)

P0056

HO2S Heater Control Circuit (Bank 2 Sensor 2)

P0057

HO2S Heater Control Circuit Low (Bank 2 Sensor 2)

DTC Definitions

Generic (P0058 - P0106)

Obd 2

47 Code Definition

P0058

HO2S Heater Control Circuit High (Bank 2 Sensor 2)

P0062

HO2S Heater Control Circuit (Bank 2 Sensor 3)

P0063

HO2S Heater Control Circuit Low (Bank 2 Sensor 3)

P0064

HO2S Heater Control Circuit High (Bank 2 Sensor 3)

P0065

Air Assisted Injector Control Range/Performance

P0066

Air Assisted Injector Control Circuit or Circuit Low

P0067

Air Assisted Injector Control Circuit High

P0070

Ambient Air Temperature Sensor Circuit

P0071

Ambient Air Temperature Sensor Range/Performance

P0072

Ambient Air Temperature Sensor Circuit Low Input

P0073

Ambient Air Temperature Sensor Circuit High Input

P0074

Ambient Air Temperature Sensor Circuit Intermittent

P0075

Intake Valve Control Solenoid Circuit (Bank 1)

P0076

Intake Valve Control Solenoid Circuit Low (Bank 1)

P0077

Intake Valve Control Solenoid Circuit High (Bank 1)

P0078

Exhaust Valve Control Solenoid Circuit (Bank 1)

P0079

Exhaust Valve Control Solenoid Circuit Low (Bank 1)

P0080

Exhaust Valve Control Solenoid Circuit High (Bank 1)

P0081

Intake Valve Control Solenoid Circuit (Bank 2)

P0082

Intake Valve Control Solenoid Circuit Low (Bank 2)

P0083

Intake Valve Control Solenoid Circuit High (Bank 2)

P0084

Exhaust Valve Control Solenoid Circuit (Bank 2)

P0085

Exhaust Valve Control Solenoid Circuit Low (Bank 2)

P0086

Exhaust Valve Control Solenoid Circuit High (Bank 2)

P0100

Mass or Volume Air Flow Circuit Malfunction

P0101

Mass or Volume Circuit Range Performance Problem

P0102

Mass or Volume Circuit Low Input

P0103

Mass or Volume Circuit High Input

P0104

Mass or Volume Circuit Intermittent

P0105

Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

P0106

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

DTC Definitions

Generic (P0107 - P0136)

48

Obd 2

Code Definition

P0107

Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0108

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

P0109

Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent

P0110

Intake Air Temperature Circuit Malfunction

P0111

Intake Air Temperature Circuit Range/Performance Problem

P0112

Intake Air Temperature Circuit Low Input

P0113

Intake Air Temperature Circuit High Input

P0114

Intake Air Temperature Circuit Intermittent

P0115

Engine Coolant Temperature Circuit Malfunction

P0116

Engine Coolant Temperature Circuit Range/Performance Problem

P0117

Engine Coolant Temperature Circuit Low Input

P0118

Engine Coolant Temperature Circuit High Input

P0119

Engine Coolant Temperature Circuit Intermittent

P0120

Throttle/Pedal Position Sensor/Switch A Circuit Malfunction

P0121

Throttle/Pedal Position Sensor/Switch A Circuit Range/ Performance Problem

P0122

Throttle/Pedal Position Sensor/Switch A Circuit Low Input

P0123

Throttle/Pedal Position Sensor/Switch A Circuit High Input

P0124

Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

P0125

Insufficient Coolant Temperature for Closed Loop Fuel Control

P0126

Insufficient Coolant Temperature for Stable Operation

P0127

Intake Air Temperature Too High

P0128

Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

P0130

O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)

P0131

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

P0132

O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

P0133

O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

P0134

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P0136

O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)

DTC Definitions

Generic (P0137 - P0170)

Obd 2

49 Code Definition

P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

P0138

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

P0139

O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)

P0140

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

P0141

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

P0142

O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)

P0143

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)

P0144

O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)

P0145

O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)

P0146

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)

P0147

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)

P0148

Fuel Delivery Error

P0149

Fuel Timing Error

P0150

O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)

P0151

O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)

P0152

O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)

P0153

O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)

P0154

O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

P0156

O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)

P0157

O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)

P0158

O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)

P0159

O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)

P0160

O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)

P0161

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

P0162

O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)

P0163

O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)

P0164

O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)

P0165

O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)

P0166

O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)

P0167

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)

P0168

Fuel Temperature Too High

P0169

Incorrect Fuel Composition

P0170

Fuel Trim Malfunction (Bank 1)

DTC Definitions

Generic (P0171 - P0204)

50

Obd 2

Code Definition

P0171

System too Lean (Bank 1)

P0172

System too Rich (Bank 1)

P0173

Fuel Trim Malfunction (Bank 2)

P0174

System too Lean (Bank 2)

P0175

System too Rich (Bank 2)

P0176

Fuel Composition Sensor Circuit Malfunction

P0177

Fuel Composition Sensor Circuit Range/Performance

P0178

Fuel Composition Sensor Circuit Low Input

P0179

Fuel Composition Sensor Circuit High Input

P0180

Fuel Temperature Sensor A Circuit Malfunction

P0181

Fuel Temperature Sensor A Circuit Range/Performance

P0182

Fuel Temperature Sensor A Circuit Low Input

P0183

Fuel Temperature Sensor A Circuit High Input

P0184

Fuel Temperature Sensor A Circuit Intermittent

P0185

Fuel Temperature Sensor B Circuit Malfunction

P0186

Fuel Temperature Sensor B Circuit Range/Performance

P0187

Fuel Temperature Sensor B Circuit Low Input

P0188

Fuel Temperature Sensor B Circuit High Input

P0189

Fuel Temperature Sensor B Circuit Intermittent

P0190

Fuel Rail Pressure Sensor Circuit Malfunction

P0191

Fuel Rail Pressure Sensor Circuit Range/Performance

P0192

Fuel Rail Pressure Sensor Circuit Low Input

P0193

Fuel Rail Pressure Sensor Circuit High Input

P0194

Fuel Rail Pressure Sensor Circuit Intermittent

P0195

Engine Oil Temperature Sensor Malfunction

P0196

Engine Oil Temperature Sensor Range/Performance

P0197

Engine Oil Temperature Sensor Low

P0198

Engine Oil Temperature Sensor High

P0199

Engine Oil Temperature Sensor Intermittent

P0200

Injector Circuit Malfunction

P0201

Injector Circuit Malfunction - Cylinder 1

P0202

Injector Circuit Malfunction - Cylinder 2

P0203

Injector Circuit Malfunction - Cylinder 3

P0204

Injector Circuit Malfunction - Cylinder 4

DTC Definitions

Generic (P0205 - P0236)

Obd 2

51 Code Definition

P0205

Injector Circuit Malfunction - Cylinder 5

P0206

Injector Circuit Malfunction - Cylinder 6

P0207

Injector Circuit Malfunction - Cylinder 7

P0208

Injector Circuit Malfunction - Cylinder 8

P0209

Injector Circuit Malfunction - Cylinder 9

P0210

Injector Circuit Malfunction - Cylinder 10

P0211

Injector Circuit Malfunction - Cylinder 11

P0212

Injector Circuit Malfunction - Cylinder 12

P0213

Cold Start Injector 1 Malfunction

P0214

Cold Start Injector 2 Malfunction

P0215

Engine Shutoff Solenoid Malfunction

P0216

Injection Timing Control Circuit Malfunction

P0217

Engine Overtemp Condition

P0218

Transmission Over Temperature Condition

P0219

Engine Overspeed Condition

P0220

Throttle/Pedal Position Sensor/Switch B Circuit Malfunction

P0221

Throttle/Pedal Position Sensor/Switch B Circuit Range/ Performance Problem

P0222

Throttle/Pedal Position Sensor/Switch B Circuit Low Input

P0223

Throttle/Pedal Position Sensor/Switch B Circuit High Input

P0224

Throttle/Pedal Position Sensor/Switch B Circuit Intermittent

P0225

Throttle/Pedal Position Sensor/Switch C Circuit Malfunction

P0226

Throttle/Pedal Position Sensor/Switch C Circuit Range/ Performance Problem

P0227

Throttle/Pedal Position Sensor/Switch C Circuit Low Input

P0228

Throttle/Pedal Position Sensor/Switch C Circuit High Input

P0229

Throttle/Pedal Position Sensor/Switch C Circuit Intermittent

P0230

Fuel Pump Primary Circuit Malfunction

P0231

Fuel Pump Secondary Circuit Low

P0232

Fuel Pump Secondary Circuit High

P0233

Fuel Pump Secondary Circuit Intermittent

P0234

Engine Overboost Condition

P0235

Turbocharger Boost Sensor A Circuit Malfunction

P0236

Turbocharger Boost Sensor A Circuit Range/Performance

DTC Definitions

Generic (P0237 - P0270)

52

Obd 2

Code Definition

P0237

Turbocharger Boost Sensor A Circuit Low

P0238

Turbocharger Boost Sensor A Circuit High

P0239

Turbocharger Boost Sensor B Circuit Malfunction

P0240

Turbocharger Boost Sensor B Circuit Range/Performance

P0241

Turbocharger Boost Sensor B Circuit Low

P0242

Turbocharger Boost Sensor B Circuit High

P0243

Turbocharger Wastegate Solenoid A Malfunction

P0244

Turbocharger Wastegate Solenoid A Range/Performance

P0245

Turbocharger Wastegate Solenoid A Low

P0246

Turbocharger Wastegate Solenoid A High

P0247

Turbocharger Wastegate Solenoid B Malfunction

P0248

Turbocharger Wastegate Solenoid B Range/Performance

P0249

Turbocharger Wastegate Solenoid B Low

P0250

Turbocharger Wastegate Solenoid B High

P0251

Injection Pump A Rotor/Cam Malfunction

P0252

Injection Pump A Rotor/Cam Range/Performance

P0253

Injection Pump A Rotor/Cam Low

P0254

Injection Pump A Rotor/Cam High

P0255

Injection Pump A Rotor/Cam Intermitted

P0256

Injection Pump B Rotor/Cam Malfunction

P0257

Injection Pump B Rotor/Cam Range/Performance

P0258

Injection Pump B Rotor/Cam Low

P0259

Injection Pump B Rotor/Cam High

P0260

Injection Pump B Rotor/Cam Intermitted

P0261

Cylinder 1 Injector Circuit Low

P0262

Cylinder 1 Injector Circuit High

P0263

Cylinder 1 Contribution/Balance Fault

P0264

Cylinder 2 Injector Circuit Low

P0265

Cylinder 2 Injector Circuit High

P0266

Cylinder 2 Contribution/Balance Fault

P0267

Cylinder 3 Injector Circuit Low

P0268

Cylinder 3 Injector Circuit High

P0269

Cylinder 3 Contribution/Balance Fault

P0270

Cylinder 4 Injector Circuit Low

DTC Definitions

Generic (P0271 - P0306)

Obd 2

53 Code Definition

P0271

Cylinder 4 Injector Circuit High

P0272

Cylinder 4 Contribution/Balance Fault

P0273

Cylinder 5 Injector Circuit Low

P0274

Cylinder 5 Injector Circuit High

P0275

Cylinder 5 Contribution/Balance Fault

P0276

Cylinder 6 Injector Circuit Low

P0277

Cylinder 6 Injector Circuit High

P0278

Cylinder 6 Contribution/Balance Fault

P0279

Cylinder 7 Injector Circuit Low

P0280

Cylinder 7 Injector Circuit High

P0281

Cylinder 7 Contribution/Balance Fault

P0282

Cylinder 8 Injector Circuit Low

P0283

Cylinder 8 Injector Circuit High

P0284

Cylinder 8 Contribution/Balance Fault

P0285

Cylinder 9 Injector Circuit Low

P0286

Cylinder 9 Injector Circuit High

P0287

Cylinder 9 Contribution/Balance Fault

P0288

Cylinder 10 Injector Circuit Low

P0289

Cylinder 10 Injector Circuit High

P0290

Cylinder 10 Contribution/Balance Fault

P0291

Cylinder 11 Injector Circuit Low

P0292

Cylinder 11 Injector Circuit High

P0293

Cylinder 11 Contribution/Balance Fault

P0294

Cylinder 12 Injector Circuit Low

P0295

Cylinder 12 Injector Circuit High

P0296

Cylinder 12 Contribution/Balance Fault

P0298

Engine Oil Over Temperature

P0300

Random/Multiple Cylinder Misfire Detected

P0301

Cylinder 1 Misfire Detected

P0302

Cylinder 2 Misfire Detected

P0303

Cylinder 3 Misfire Detected

P0304

Cylinder 4 Misfire Detected

P0305

Cylinder 5 Misfire Detected

P0306

Cylinder 6 Misfire Detected

DTC Definitions

Generic (P0307 - P0344)

54

Obd 2

Code Definition

P0307

Cylinder 7 Misfire Detected

P0308

Cylinder 8 Misfire Detected

P0309

Cylinder 9 Misfire Detected

P0310

Cylinder 10 Misfire Detected

P0311

Cylinder 11 Misfire Detected

P0312

Cylinder 12 Misfire Detected

P0313

Misfire Detected with Low Fuel

P0314

Single Cylinder Misfire (Cylinder not specified)

P0320

Ignition/Distributor Engine Speed Input Circuit Malfunction

P0321

Ignition/Distributor Engine Speed Input Circuit Range/ Performance

P0322

Ignition/Distributor Engine Speed Input Circuit No Signal

P0323

Ignition/Distributor Engine Speed Input Circuit Intermittent

P0324

Knock Control System Error

P0325

Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)

P0326

Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)

P0327

Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

P0328

Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

P0329

Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor)

P0330

Knock Sensor 2 Circuit Malfunction (Bank 2)

P0331

Knock Sensor 2 Circuit Range/Performance (Bank 2)

P0332

Knock Sensor 2 Circuit Low Input (Bank 2)

P0333

Knock Sensor 2 Circuit High Input (Bank 2)

P0334

Knock Sensor 2 Circuit Intermittent (Bank 2)

P0335

Crankshaft Position Sensor A Circuit Malfunction

P0336

Crankshaft Position Sensor A Circuit Range/Performance

P0337

Crankshaft Position Sensor A Circuit Low Input

P0338

Crankshaft Position Sensor A Circuit High Input

P0339

Crankshaft Position Sensor A Circuit Intermittent

P0340

Camshaft Position Sensor Circuit Malfunction

P0341

Camshaft Position Sensor Circuit Range/Performance

P0342

Camshaft Position Sensor Circuit Low Input

P0343

Camshaft Position Sensor Circuit High Input

P0344

Camshaft Position Sensor Circuit Intermittent

DTC Definitions

Generic (P0345 - P0377)

Obd 2

55 Code Definition

P0345

Camshaft Position Sensor "A" Circuit (Bank 2)

P0346

Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)

P0347

Camshaft Position Sensor "A" Circuit Low Input (Bank 2)

P0348

Camshaft Position Sensor "A" Circuit High Input (Bank 2)

P0349

Camshaft Position Sensor "A" Circuit Intermittent (Bank 2)

P0350

Ignition Coil Primary/Secondary Circuit Malfunction

P0351

Ignition Coil A Primary/Secondary Circuit Malfunction

P0352

Ignition Coil B Primary/Secondary Circuit Malfunction

P0353

Ignition Coil C Primary/Secondary Circuit Malfunction

P0354

Ignition Coil D Primary/Secondary Circuit Malfunction

P0355

Ignition Coil E Primary/Secondary Circuit Malfunction

P0356

Ignition Coil F Primary/Secondary Circuit Malfunction

P0357

Ignition Coil G Primary/Secondary Circuit Malfunction

P0358

Ignition Coil H Primary/Secondary Circuit Malfunction

P0359

Ignition Coil I Primary/Secondary Circuit Malfunction

P0360

Ignition Coil J Primary/Secondary Circuit Malfunction

P0361

Ignition Coil K Primary/Secondary Circuit Malfunction

P0362

Ignition Coil L Primary/Secondary Circuit Malfunction

P0365

Camshaft Position Sensor "B" Circuit (Bank 1)

P0366

Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)

P0367

Camshaft Position Sensor "B" Circuit Low Input (Bank 1)

P0368

Camshaft Position Sensor "B" Circuit High Input (Bank 1)

P0369

Camshaft Position Sensor "B" Circuit Intermittent (Bank 1)

P0370

Timing Reference High Resolution Signal A Malfunction

P0371

Timing Reference High Resolution Signal A Too Many Pulses

P0372

Timing Reference High Resolution Signal A Too Few Pulses

P0373

Timing Reference High Resolution Signal A Intermittent/ Erratic Pulses

P0374

Timing Reference High Resolution Signal A No Pulses

P0375

Timing Reference High Resolution Signal B Malfunction

P0376

Timing Reference High Resolution Signal B Too Many Pulses

P0377

Timing Reference High Resolution Signal B Too Few Pulses

DTC Definitions

Generic (P0378 - P0415)

Code Definition

P0378

Timing Reference High Resolution Signal B Intermittent/Erratic Pulses

P0379

Timing Reference High Resolution Signal B No Pulses

P0380

Glow Plug/Heater Circuit Malfunction

P0381

Glow Plug/Heater Indicator Circuit Malfunction

P0382

Glow Plug/Heater Circuit "B" Malfunction

P0385

Crankshaft Position Sensor B Circuit Malfunction

P0386

Crankshaft Position Sensor B Circuit Range/Performance

P0387

Crankshaft Position Sensor B Circuit Low Input

P0388

Crankshaft Position Sensor B Circuit High Input

P0389

Crankshaft Position Sensor B Circuit Intermittent

P0390

Camshaft Position Sensor "B" Circuit (Bank 2)

P0391

Camshaft Position Sensor "B" Circuit Range/Performance (Bank 2)

P0392

Camshaft Position Sensor "B" Circuit Low Input (Bank 2)

P0393

Camshaft Position Sensor "B" Circuit High Input (Bank 2)

P0394

Camshaft Position Sensor "B" Circuit Intermittent (Bank 2)

P0400

Exhaust Gas Recirculation Flow Malfunction

P0401

Exhaust Gas Recirculation Flow Insufficient Detected

P0402

Exhaust Gas Recirculation Flow Excessive Detected

P0403

Exhaust Gas Recirculation Circuit Malfunction

P0404

Exhaust Gas Recirculation Circuit Range/Performance

P0405

Exhaust Gas Recirculation Sensor A Circuit Low

P0406

Exhaust Gas Recirculation Sensor A Circuit High

P0407

Exhaust Gas Recirculation Sensor B Circuit Low

P0408

Exhaust Gas Recirculation Sensor B Circuit High

P0409

Exhaust Gas Recirculation Sensor "A" Circuit

P0410

Secondary Air Injection System Malfunction

P0411

Secondary Air Injection System Incorrect Flow Detected

P0412

Secondary Air Injection System Switching Valve A Circuit Malfunction

P0413

Secondary Air Injection System Switching Valve A Circuit Open

P0414

Secondary Air Injection System Switching Valve A Circuit Shorted

P0415

Secondary Air Injection System Switching Valve B Circuit Malfunction 56

Obd 2

DTC Definitions

Generic (P0416 - P0445)

Obd 2

57 Code Definition

P0416

Secondary Air Injection System Switching Valve B Circuit Open

P0417

Secondary Air Injection System Switching Valve B Circuit Shorted

P0418

Secondary Air Injection System Relay "A" Circuit Malfunction

P0419

Secondary Air Injection System Relay "B" Circuit Malfunction

P0420

Catalyst System Efficiency Below Threshold (Bank 1)

P0421

Warm Up Catalyst Efficiency Below Threshold (Bank 1)

P0422

Main Catalyst Efficiency Below Threshold (Bank 1)

P0423

Heated Catalyst Efficiency Below Threshold (Bank 1)

P0424

Heated Catalyst Temperature Below Threshold (Bank 1)

P0425

Catalyst Temperature Sensor (Bank 1)

P0426

Catalyst Temperature Sensor Range/Performance (Bank 1)

P0427

Catalyst Temperature Sensor Low Input (Bank 1)

P0428

Catalyst Temperature Sensor High Input (Bank 1)

P0429

Catalyst Heater Control Circuit (Bank 1)

P0430

Catalyst System Efficiency Below Threshold (Bank 2)

P0431

Warm Up Catalyst Efficiency Below Threshold (Bank 2)

P0432

Main Catalyst Efficiency Below Threshold (Bank 2)

P0433

Heated Catalyst Efficiency Below Threshold (Bank 2)

P0434

Heated Catalyst Temperature Below Threshold (Bank 2)

P0435

Catalyst Temperature Sensor (Bank 2)

P0436

Catalyst Temperature Sensor Range/Performance (Bank 2)

P0437

Catalyst Temperature Sensor Low Input (Bank 2)

P0438

Catalyst Temperature Sensor High Input (Bank 2)

P0439

Catalyst Heater Control Circuit (Bank 2)

P0440

Evaporative Emission Control System Malfunction

P0441

Evaporative Emission Control System Incorrect Purge Flow

P0442

Evaporative Emission Control System Leak Detected (small leak)

P0443

Evaporative Emission Control System Purge Control Valve Circuit Malfunction

P0444

Evaporative Emission Control System Purge Control Valve Circuit Open

P0445

Evaporative Emission Control System Purge Control Valve Circuit Shorted

DTC Definitions

Generic (P0446 - P0473)

58

Obd 2

Code Definition

P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

P0447

Evaporative Emission Control System Vent Control Open

P0448

Evaporative Emission Control System Vent Control Circuit Shorted

P0449

Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

P0450

Evaporative Emission Control System Pressure Sensor Malfunction

P0451

Evaporative Emission Control System Pressure Sensor Range/ Performance

P0452

Evaporative Emission Control System Pressure Sensor Low Input

P0453

Evaporative Emission Control System Pressure Sensor High Input

P0454

Evaporative Emission Control System Pressure Sensor Intermittent

P0455

Evaporative Emission Control System Leak Detected (gross leak)

P0456

Evaporative Emission Control System Leak Detected (very small leak)

P0457

Evaporative Emission Control System Leak Detected (fuel cap loose/off)

P0460

Fuel Level Sensor Circuit Malfunction

P0461

Fuel Level Sensor Circuit Range/Performance

P0462

Fuel Level Sensor Circuit Low Input

P0463

Fuel Level Sensor Circuit High Input

P0464

Fuel Level Sensor Circuit Intermittent

P0465

Purge Flow Sensor Circuit Malfunction

P0466

Purge Flow Sensor Circuit Range/Performance

P0467

Purge Flow Sensor Circuit Low Input

P0468

Purge Flow Sensor Circuit High Input

P0469

Purge Flow Sensor Circuit Intermittent

P0470

Exhaust Pressure Sensor Malfunction

P0471

Exhaust Pressure Sensor Range/Performance

P0472

Exhaust Pressure Sensor Low

P0473

Exhaust Pressure Sensor High

DTC Definitions

Generic (P0474 - P0517)

Obd 2

59 Code Definition

P0474

Exhaust Pressure Sensor Intermittent

P0475

Exhaust Pressure Control Valve Malfunction

P0476

Exhaust Pressure Control Valve Range/Performance

P0477

Exhaust Pressure Control Valve Low

P0478

Exhaust Pressure Control Valve High

P0479

Exhaust Pressure Control Valve Intermittent

P0480

Cooling Fan 1 Control Circuit Malfunction

P0481

Cooling Fan 2 Control Circuit Malfunction

P0482

Cooling Fan 3 Control Circuit Malfunction

P0483

Cooling Fan Rationality Check Malfunction

P0484

Cooling Fan Circuit Over Current

P0485

Cooling Fan Power/Ground Circuit Malfunction

P0486

Exhaust Gas Recirculation Sensor "B" Circuit

P0487

Exhaust Gas Recirculation Throttle Position Control Circuit

P0488

Exhaust Gas Recirculation Throttle Position Control Range/ Performance

P0491

Secondary Air Injection System (Bank 1)

P0492

Secondary Air Injection System (Bank 2)

P0500

Vehicle Speed Sensor Malfunction

P0501

Vehicle Speed Sensor Range/Performance

P0502

Vehicle Speed Sensor Circuit Low Input

P0503

Vehicle Speed Sensor Intermittent/Erratic/High

P0505

Idle Control System Malfunction

P0506

Idle Control System RPM Lower Than Expected

P0507

Idle Control System RPM Higher Than Expected

P0508

Idle Control System Circuit Low

P0509

Idle Control System Circuit High

P0510

Closed Throttle Position Switch Malfunction

P0512

Starter Request Circuit

P0513

Incorrect Immobilizer Key ("Immobilizer" pending SAE J1930 approval)

P0515

Battery Temperature Sensor Circuit

P0516

Battery Temperature Sensor Circuit Low

P0517

Battery Temperature Sensor Circuit High

DTC Definitions

Generic (P0520 - P0569)

60

Obd 2

Code Definition

P0520

Engine Oil Pressure/Switch Circuit Malfunction

P0521

Engine Oil Pressure/Switch Range/Performance

P0522

Engine Oil Pressure/Switch Low Voltage

P0523

Engine Oil Pressure/Switch High Voltage

P0524

Engine Oil Pressure Too Low

P0530

A/C Refrigerant Pressure Sensor Circuit Malfunction

P0531

A/C Refrigerant Pressure Sensor Circuit Range/Performance

P0532

A/C Refrigerant Pressure Sensor Circuit Low Input

P0533

A/C Refrigerant Pressure Sensor Circuit High Input

P0534

Air Conditioner Refrigerant Charge Loss

P0540

Intake Air Heater Circuit

P0541

Intake Air Heater Circuit Low

P0542

Intake Air Heater Circuit High

P0544

Exhaust Gas Temperature Sensor Circuit (Bank 1)

P0545

Exhaust Gas Temperature Sensor Circuit Low (Bank 1)

P0546

Exhaust Gas Temperature Sensor Circuit High (Bank 1)

P0547

Exhaust Gas Temperature Sensor Circuit (Bank 2)

P0548

Exhaust Gas Temperature Sensor Circuit Low (Bank 2)

P0549

Exhaust Gas Temperature Sensor Circuit High (Bank 2)

P0550

Power Steering Pressure Sensor Circuit Malfunction

P0551

Power Steering Pressure Sensor Circuit Range/Performance

P0552

Power Steering Pressure Sensor Circuit Low Input

P0553

Power Steering Pressure Sensor Circuit High Input

P0554

Power Steering Pressure Sensor Circuit Intermittent

P0560

System Voltage Malfunction

P0561

System Voltage Unstable

P0562

System Voltage Low

P0563

System Voltage High

P0564

Cruise Control Multi-Function Input Signal

P0565

Cruise Control On Signal Malfunction

P0566

Cruise Control Off Signal Malfunction

P0567

Cruise Control Resume Signal Malfunction

P0568

Cruise Control Set Signal Malfunction

P0569

Cruise Control Coast Signal Malfunction

DTC Definitions

Generic (P0570 - P0635)

Obd 2

61 Code Definition

P0570

Cruise Control Accel Signal Malfunction

P0571

Cruise Control/Brake Switch A Circuit Malfunction

P0572

Cruise Control/Brake Switch A Circuit Low

P0573

Cruise Control/Brake Switch A Circuit High

P0574

Cruise Control System - Vehicle Speed Too High

P0575

Cruise Control Input Circuit

P0576

Cruise Control Input Circuit Low

P0577

Cruise Control Input Circuit High

P0578-

Reserved for Cruise Control Codes

P0580

P0600

Serial Communication Link Malfunction

P0601

Internal Control Module Memory Check Sum Error

P0602

Control Module Programming Error

P0603

Internal Control Module Keep Alive Memory (KAM) Error

P0604

Internal Control Module Random Access Memory (RAM) Error

P0605

Internal Control Module Read Only Memory (ROM) Error

P0606

PCM Processor Fault

P0607

Control Module Performance

P0608

Control Module VSS Output "A" Malfunction

P0609

Control Module VSS Output "B" Malfunction

P0610

Control Module Vehicle Options Error

P0615

Starter Relay Circuit

P0616

Starter Relay Circuit Low

P0617

Starter Relay Circuit High

P0618

Alternative Fuel Control Module KAM Error

P0619

Alternative Fuel Control Module RAM/ROM Error

P0620

Generator Control Circuit Malfunction

P0621

Generator Lamp "L" Control Circuit Malfunction

P0622

Generator Field "F" Control Circuit Malfunction

P0623

Generator Lamp Control Circuit

P0624

Fuel Cap Lamp Control Circuit

P0630

VIN Not Programmed or Mismatch - ECM/PCM

P0631

VIN Not Programmed or Mismatch - TCM

P0635

Power Steering Control Circuit

DTC Definitions

Generic (P0636 - P0711)

62

Obd 2

Code Definition

P0636

Power Steering Control Circuit Low

P0637

Power Steering Control Circuit High

P0638

Throttle Actuator Control Range/Performance (Bank 1)

P0639

Throttle Actuator Control Range/Performance (Bank 2)

P0640

Intake Air Heater Control Circuit

P0645

A/C Clutch Relay Control Circuit

P0646

A/C Clutch Relay Control Circuit Low

P0647

A/C Clutch Relay Control Circuit High

P0648

Immobilizer Lamp Control Circuit ("Immobilizer" pending SAE J1930 approval)

P0649

Speed Control Lamp Control Circuit

P0650

Malfunction Indicator Lamp (MIL) Control Circuit Malfunction

P0654

Engine RPM Output Circuit Malfunction

P0655

Engine Hot Lamp Output Control Circuit Malfunction

P0656

Fuel Level Output Circuit Malfunction

P0660

Intake Manifold Tuning Valve Control Circuit (Bank 1)

P0661

Intake Manifold Tuning Valve Control Circuit Low (Bank 1)

P0662

Intake Manifold Tuning Valve Control Circuit High (Bank 1)

P0663

Intake Manifold Tuning Valve Control Circuit (Bank 2)

P0664

Intake Manifold Tuning Valve Control Circuit Low (Bank 2)

P0665

Intake Manifold Tuning Valve Control Circuit High (Bank 2)

P0700

Transmission Control System Malfunction

P0701

Transmission Control System Range/Performance

P0702

Transmission Control System Electrical

P0703

Torque Converter/Brake Switch B Circuit Malfunction

P0704

Clutch Switch Input Circuit Malfunction

P0705

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

P0706

Transmission Range Sensor Circuit Range/Performance

P0707

Transmission Range Sensor Circuit Low Input

P0708

Transmission Range Sensor Circuit High Input

P0709

Transmission Range Sensor Circuit Intermittent

P0710

Transmission Fluid Temperature Sensor Circuit Malfunction

P0711

Transmission Fluid Temperature Sensor Circuit Range/ Performance

DTC Definitions

Generic (P0712 - P0746)

Obd 2

63 Code Definition

P0712

Transmission Fluid Temperature Sensor Circuit Low Input

P0713

Transmission Fluid Temperature Sensor Circuit High Input

P0714

Transmission Fluid Temperature Sensor Circuit Intermittent

P0715

Input/Turbine Speed Sensor Circuit Malfunction

P0716

Input/Turbine Speed Sensor Circuit Range/Performance

P0717

Input/Turbine Speed Sensor Circuit No Signal

P0718

Input/Turbine Speed Sensor Circuit Intermittent

P0719

Torque Converter/Brake Switch B Circuit Low

P0720

Output Speed Sensor Circuit Malfunction

P0721

Output Speed Sensor Circuit Range/Performance

P0722

Output Speed Sensor Circuit No Signal

P0723

Output Speed Sensor Circuit Intermittent

P0724

Torque Converter/Brake Switch B Circuit High

P0725

Engine Speed Input Circuit Malfunction

P0726

Engine Speed Input Circuit Range/Performance

P0727

Engine Speed Input Circuit No Signal

P0728

Engine Speed Input Circuit Intermittent

P0730

Incorrect Gear Ratio

P0731

Gear 1 Incorrect Ratio

P0732

Gear 2 Incorrect Ratio

P0733

Gear 3 Incorrect Ratio

P0734

Gear 4 Incorrect Ratio

P0735

Gear 5 Incorrect Ratio

P0736

Reverse Incorrect Ratio

P0737

TCM Engine Speed Output Circuit

P0738

TCM Engine Speed Output Circuit Low

P0739

TCM Engine Speed Output Circuit High

P0740

Torque Converter Clutch Circuit Malfunction

P0741

Torque Converter Clutch Circuit Performance or Stuck Off

P0742

Torque Converter Clutch Circuit Stuck On

P0743

Torque Converter Clutch Circuit Electrical

P0744

Torque Converter Clutch Circuit Intermittent

P0745

Pressure Control Solenoid Malfunction

P0746

Pressure Control Solenoid Performance or Stuck Off

DTC Definitions

Generic (P0747 - P0780)

64

Obd 2

Code Definition

P0747

Pressure Control Solenoid Stuck On

P0748

Pressure Control Solenoid Electrical

P0749

Pressure Control Solenoid Intermittent

P0750

Shift Solenoid A Malfunction

P0751

Shift Solenoid A Performance or Stuck Off

P0752

Shift Solenoid A Stuck On

P0753

Shift Solenoid A Electrical

P0754

Shift Solenoid A Intermittent

P0755

Shift Solenoid B Malfunction

P0756

Shift Solenoid B Performance or Stuck Off

P0757

Shift Solenoid B Stuck On

P0758

Shift Solenoid B Electrical

P0759

Shift Solenoid B Intermittent

P0760

Shift Solenoid C Malfunction

P0761

Shift Solenoid C Performance or Stuck Off

P0762

Shift Solenoid C Stuck On

P0763

Shift Solenoid C Electrical

P0764

Shift Solenoid C Intermittent

P0765

Shift Solenoid D Malfunction

P0766

Shift Solenoid D Performance or Stuck Off

P0767

Shift Solenoid D Stuck On

P0768

Shift Solenoid D Electrical

P0769

Shift Solenoid D Intermittent

P0770

Shift Solenoid E Malfunction

P0771

Shift Solenoid E Performance or Stuck Off

P0772

Shift Solenoid E Stuck On

P0773

Shift Solenoid E Electrical

P0774

Shift Solenoid E Intermittent

P0775

Pressure Control Solenoid "B"

P0776

Pressure Control Solenoid "B" Performance or Stuck Off

P0777

Pressure Control Solenoid "B" Stuck On

P0778

Pressure Control Solenoid "B" Electrical

P0779

Pressure Control Solenoid "B" Intermittent

P0780

Shift Malfunction

DTC Definitions

Generic (P0781 - P0816)

Obd 2

65 Code Definition

P0781

1-2 Shift Malfunction

P0782

2-3 Shift Malfunction

P0783

3-4 Shift Malfunction

P0784

4-5 Shift Malfunction

P0785

Shift/Timing Solenoid Malfunction

P0786

Shift/Timing Solenoid Range/Performance

P0787

Shift/Timing Solenoid Low

P0788

Shift/Timing Solenoid High

P0789

Shift/Timing Solenoid Intermittent

P0790

Normal/Performance Switch Circuit Malfunction

P0791

Intermediate Shaft Speed Sensor Circuit

P0792

Intermediate Shaft Speed Sensor Circuit Range/Performance

P0793

Intermediate Shaft Speed Sensor Circuit No Signal

P0794

Intermediate Shaft Speed Sensor Circuit Intermittent

P0795

Pressure Control Solenoid "C"

P0796

Pressure Control Solenoid "C" Performance or Stuck Off

P0797

Pressure Control Solenoid "C" Stuck On

P0798

Pressure Control Solenoid "C" Electrical

P0799

Pressure Control Solenoid "C" Intermittent

P0801

Reverse Inhibit Control Circuit Malfunction

P0803

1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction

P0804

1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction

P0805

Clutch Position Sensor Circuit

P0806

Clutch Position Sensor Circuit Range/Performance

P0807

Clutch Position Sensor Circuit Low

P0808

Clutch Position Sensor Circuit High

P0809

Clutch Position Sensor Circuit Intermittent

P0810

Clutch Position Control Error

P0811

Excessive Clutch Slippage

P0812

Reverse Input Circuit

P0813

Reverse Output Circuit

P0814

Transmission Range Display Circuit

P0815

Upshift Switch Circuit

P0816

Downshift Switch Circuit

DTC Definitions

Generic (P0817 - P0849)

66

Obd 2

Code Definition

P0817

Starter Disable Circuit

P0818

Driveline Disconnect Switch Input Circuit

P0820

Gear Lever X-Y Position Sensor Circuit

P0821

Gear Lever X Position Circuit

P0822

Gear Lever Y Position Circuit

P0823

Gear Lever X Position Circuit Intermittent

P0824

Gear Lever Y Position Circuit Intermittent

P0825

Gear Lever Push-Pull Switch (Shift Anticipate)

P0830

Clutch Pedal Switch "A" Circuit

P0831

Clutch Pedal Switch "A" Circuit Low

P0832

Clutch Pedal Switch "A" Circuit High

P0833

Clutch Pedal Switch "B" Circuit

P0834

Clutch Pedal Switch "B" Circuit Low

P0835

Clutch Pedal Switch "B" Circuit High

P0836

Four Wheel Drive (4WD) Switch Circuit

P0837

Four Wheel Drive (4WD) Switch Circuit Range/Performance

P0838

Four Wheel Drive (4WD) Switch Circuit Low

P0839

Four Wheel Drive (4WD) Switch Circuit High

P0840

Transmission Fluid Pressure Sensor/Switch "A" Circuit

P0841

Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/ Performance

P0842

Transmission Fluid Pressure Sensor/Switch "A" Circuit Low

P0843

Transmission Fluid Pressure Sensor/Switch "A" Circuit High

P0844

Transmission Fluid Pressure Sensor/Switch "A" Circuit Intermittent

P0845

Transmission Fluid Pressure Sensor/Switch "B" Circuit

P0846

Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/ Performance

P0847

Transmission Fluid Pressure Sensor/Switch "B" Circuit Low

P0848

Transmission Fluid Pressure Sensor/Switch "B" Circuit High

P0849

Transmission Fluid Pressure Sensor/Switch "B" Circuit Intermittent

DTC Definitions

Chrysler (P1103 - P1389)

Obd 2

67

Manufacturer Specific Codes - Chrysler

Code Definition

P1103

Turbocharger Waste Gate Actuator Malfunction

P1104

Turbocharger Waste Gate Solenoid Malfunction

P1105

Fuel Pressure Solenoid Malfunction

P1195

Slow Switching O2 Sensor Bank One Sensor One During catalyst monitoring

P1196

Slow Switching O2 Sensor Bank two Sensor one During catalyst monitoring

P1197

Slow Switching O2 Sensor Bank One Sensor two During catalyst monitoring

P1198

Radiator Temperature Sensor Input voltage too high

P1199

Radiator Temperature Sensor Input voltage too low

P1281

Engine is cold too long

P1282

Fuel Pump Relay control circuit

P1283

Idle select signal invalid

P1284

Fuel Injection pump battery voltage sensor out of range

P1285

Fuel Injection pump controller always on

P1286

Accelerator Position Sensor (APPS) supply voltage too high

P1287

Fuel Injection pump Controller Supply voltage low

P1288

Intake manifold short runner tuning valve solenoid circuit

P1289

Manifold tune valve solenoid circuit

P1290

CNG Fuel system pressure too high

P1291

No Temp rise seen from intake heaters

P1292

CNG Pressure sensor voltage too high

P1293

CNG Pressure sensor voltage too low

P1294

Target idle not reached

P1295

No 5 volts to TP sensor

P1296

No 5 volts to MAP sensor

P1297

No change in MAP sensor from start to run

P1298

lean operation at wide open throttle

P1299

Vacuum Leak detected (IAC fully seated)

P1300

Ignition timing adjustment circuit failure

P1388

Auto shutdown relay control circuit

P1389

No ASD relay output voltage at PCM

DTC Definitions

Chrysler (P1390 - P1596)

68

Obd 2

Code Definition

P1390

Timing belt skipped one tooth or more

P1391

Intermittent loss of CMP or CKP

P1398

Mis-Fire Adaptive Numerator at Limit (PCM is unable to learn the crank sensors signal for use in preparation for misfire diagnostics

P1399

Wait to start lamp circuit

P1403

No 5 volt feed to EGR

P1475

Auxiliary 5 volt supply is too high

P1476

Too little secondary air

P1477

Too much secondary air

P1478

Battery Temp Sensor Volts out of limit

P1479

Transmission Fan Relay Circuit

P1480

PCV Solenoid Circuit

P1481

EATX (Electronic Automatic Transaxle) RPM pulse generator performance

P1482

Catalyst Temperature Sensor Circuit shorted low

P1483

Catalyst Temperature Sensor Circuit shorted high

P1484

Catalytic Converter overheat detected

P1485

Air injection solenoid circuit

P1486

EVAP Leak Monitor found a pinched hose

P1487

Hi Speed Fan #2 Circuit

P1488

Auxiliary 5 volt supply output is too low

P1489

High speed fan control relay circuit

P1490

Low speed fan control relay circuit

P1491

Radiator fan relay control circuit

P1492

Ambient/ Battery Temp sensor input voltage too high

P1493

Ambient/ Battery Temp sensor input voltage too low

P1494

Leak detection pump pressure switch or mechanical fault

P1495

Leak detection pump solenoid circuit

P1496

5 volt supply, output too low

P1498

High speed radiator fan ground control relay circuit

P1500

General alternator 'FR' Terminal circuit fault

P1594

Charging system voltage too high

P1595

Speed control solenoid circuits

P1596

Speed control switch always high

DTC Definitions

Chrysler (P1597 - P1899)

Obd 2

69 Code Definition

P1597

Speed control switch always low

P1598

A/C pressure sensor input voltage too high

P1599

A/C pressure sensor input voltage too low

P1680

Clutch released switch circuit

P1681

No I/P Cluster CCD/ J1850 messages received

P1682

Charging system voltage too low

P1683

Speed control servo power control circuit

P1684

The battery has been disconnected within the last 50 starts

P1685

The SKIM (Smart Key Immobilizer Module) has received an invalid key

P1686

No SKIM (Smart Key Immobilizer Module) bus message received

P1687

No Mechanical Instrument cluster bus message

P1688

Internal Fuel injection pump controller failure

P1689

No communication between the ECM and injection pump module

P1690

Fuel injection pump CKP sensor does not agree with the ECM CKP sensor

P1691

Fuel injection pump controller calibration error

P1692

Fault in companion Engine control module

P1693

A companion DTC was set in both the ECM and PCM

P1694

No CCD message from PCM- Aisin transmission

P1695

No CCD message from body control module

P1696

PCM failure EEPROM write denied

P1697

PCM Failure SRI (Service Reminder Indicator) mileage not stored

P1698

No CCD message from TCM

P1719

Skip shift solenoid circuit

P1740

TCC solenoid or overdrive solenoid performance

P1756

Governor pressure not equal to target at 15-20 psi

P1757

Governor pressure is above 3 PSI when 0 PSI is requested

P1762

Governor pressure sensor offset improper voltage

P1763

Governor pressure sensor voltage to high

P1764

Governor pressure sensor voltage to low

P1765

Transmission 12 volt supply relay control circuit

P1899

Park/ Neutral switch stuck in park or gear

DTC Definitions

Ford (P1000 - P1133)

70

Obd 2

Manufacturer Specific Codes - Ford

Code Definition

P1000

OBD Systems Readiness Test Not Complete

P1001

KOER Not Able to Complete, KOER Aborted

P1100

Mass Air Flow Sensor Circuit Intermittent

P1101

Mass Air Flow Sensor Out Of Self Test Range

P1105

Dual Alternator Upper Fault

P1106

Dual Alternator Lower Fault

P1107

Dual Alternator Lower Circuit

P1108

Dual Alternator Lower Circuit

P1109

Intake Air Temperature B Circuit Intermittent

P1111

System Pass

P1112

Intake Air Temperature Circuit Intermittent

P1114

Intake Air Temperature B Circuit Low Input (Super/Turbo Charged engines)

P1115

Intake Air Temperature B Circuit High Input (Super/Turbo Charged engines)

P1116

Engine Coolant Temperature Sensor Out Of Self Test Range

P1117

Engine Coolant Temperature Sensor Circuit Intermittent

P1118

Manifold Air Temperature Circuit Low Input

P1119

Manifold Air Temperature Circuit High Input

P1120

Throttle Position Sensor A Out Of Range Low (Ratch too low)

P1121

Throttle Position Sensor A Inconsistent With Mass Air Flow Sensor

P1122

Pedal Position Sensor A Circuit Low Input

P1123

Pedal Position Sensor A Circuit High Input

P1124

Throttle Position Sensor A Out Of Self Test Range

P1125

Throttle Position Sensor A Intermittent

P1127

Exhaust Not Warm, Downstream O2 Sensor Not Tested

P1128

Upstream HO2S Sensors Swapped

P1129

Downstream HO2S Sensors Swapped

P1130

Lack Of HO2S11 Switches - Fuel Trim At Limit

P1131

Lack Of HO2S11 Switches - Sensor Indicates Lean

P1132

Lack Of HO2S11 Switches - Sensor Indicates Rich

P1133

Bank 1 Fuel Control Shifted Lean (FAOSC)

DTC Definitions

Ford (P1134 - P1187)

Obd 2

71 Code Definition

P1134

Bank 1 Fuel Control Shifted Rich (FAOSC)

P1135

Pedal Position Sensor A Circuit Intermittent

P1137

Lack of HO2S12 Switches - Sensor Indicates Lean

P1138

Lack of HO2S12 Switches - Sensor Indicates Rich

P1139

Water in Fuel Indicator Circuit

P1140

Water in Fuel Condition

P1141

Fuel Restriction Indicator Circuit

P1142

Fuel Restriction Condition

P1150

Lack of HO2S21 Switches - Fuel Trim At Limit

P1151

Lack of HO2S21 Switches - Sensor Indicates Lean

P1152

Lack of HO2S21 Switches - Sensor Indicates Rich

P1153

Bank 2 Fuel Control Shifted Lean (FAOSC)

P1154

Bank 2 Fuel Control Shifted Rich (FAOSC)

P1155

Alternative Fuel Control Module Has Activated the MIL

P1157

Lack of HO2S22 Switches - Sensor Indicates Lean

P1158

Lack of HO2S22 Switches - Sensor Indicates Rich

P1168

Fuel Rail Pressure Sensor In Range But Low

P1169

Fuel Rail Pressure Sensor In Range But High

P1170

Engine Shut Off Solenoid

P1171

Rotor Sensor

P1172

Rotor Control

P1173

Rotor Calibration

P1174

Cam Sensor

P1175

Cam Control

P1176

Cam Calibration

P1177

Synchronization

P1178

Boltup Limits

P1180

Fuel Delivery System - Low

P1181

Fuel Delivery System - High

P1183

Engine Oil Temperature Sensor Circuit

P1184

Engine Oil Temperature Sensor Out Of Self Test Range

P1185

Fuel Pump Temperature Sensor High

P1186

Fuel Pump Temperature Sensor Low

P1187

Variant Selection

DTC Definitions

Ford (P1188 - P1232)

72

Obd 2

Code Definition

P1188

Calibration Memory

P1189

Pump Speed Signal

P1190

Calibration Resistor Out Of Range

P1191

Key Line Voltage

P1192

V External

P1193

EGR Driver Over Current

P1194

ECM/PCM A/D Converter

P1195

SCP HBCC Chip Failed to Initialize

P1196

Key Off Voltage High

P1197

Key Off Voltage Low

P1198

Pump Rotor Control Underfueling

P1209

Injector Control Pressure Peak Delta Test Fault

P1210

Injector Control Pressure Above Expected Level

P1211

Injector Control Pressure Above/Below Desired

P1212

Injector Control Pressure Not At Expected Level

P1214

Pedal Position Sensor B Circuit Intermittent

P1215

Pedal Position Sensor C Circuit Low Input

P1216

Pedal Position Sensor C Circuit High Input

P1217

Pedal Position Sensor C Circuit Intermittent

P1218

CID High

P1219

CID Low

P1220

Series Throttle Control System

P1221

Traction Control System

P1222

Pedal Position Sensor B Circuit Low Input

P1222

Traction Control Output Circuit

P1223

Pedal Position Sensor B Circuit High Input

P1224

Throttle Position Sensor B Out Of Self Test Range

P1227

Wastegate Failed Closed (Over pressure)

P1228

Wastegate Failed Open (Under pressure)

P1229

Charge Air Cooler Pump Driver

P1230

Fuel Pump Low Speed Malfunction (VLCM)

P1231

Fuel Pump Secondary Circuit Low, High Speed (VLCM)

P1232

Fuel Pump Speed Primary Circuit (Two speed fuel pump)

DTC Definitions

Ford (P1233 - P1271)

Obd 2

73 Code Definition

P1233

Fuel Pump Driver Module Disabled or Off Line (Fuel Pump Driver Module)

P1234

Fuel Pump Driver Module Disabled or Off Line (Fuel Pump Driver Module)

P1235

Fuel Pump Control Out Of Range (Fuel Pump Driver Module/

Vlcm)

P1236

Fuel Pump Control Out Of Range (Fuel Pump Driver Module)

P1237

Fuel Pump Secondary Circuit (Fuel Pump Driver Module)

P1238

Fuel Pump Secondary Circuit (Fuel Pump Driver Module)

P1239

Speed Fuel Pump Positive Feed

P1243

Second Fuel Pump Fault or Ground Fault

P1244

Alternator Load High Input

P1245

Alternator Load Low Input

P1246

Alternator Load Input

P1247

Turbo Boost Pressure Low

P1248

Turbo Boost Pressure Not Detected

P1249

Wastegate Control Valve Performance

P1252

Pedal Correlation PDS1 and LPDS High

P1253

Pedal Correlation PDS1 and LPDS Low

P1254

Pedal Correlation PDS2 and LPDS High

P1255

Pedal Correlation PDS2 and LPDS Low

P1256

Pedal Correlation PDS1 and HPDS

P1257

Pedal Correlation PDS2 and HPDS

P1258

Pedal Correlation PDS1 and PDS2

P1260

Theft Detected, Vehicle Immobilized

P1261

Cylinder #1 High To Low Side Short

P1262

Cylinder #2 High To Low Side Short

P1263

Cylinder #3 High To Low Side Short

P1264

Cylinder #4 High To Low Side Short

P1265

Cylinder #5 High To Low Side Short

P1266

Cylinder #6 High To Low Side Short

P1267

Cylinder #7 High To Low Side Short

P1268

Cylinder #8 High To Low Side Short

P1270

Engine RPM or Vehicle Speed Limiter Reached

P1271

Cylinder #1 High To Low Side Open

DTC Definitions

Ford (P1272 - P1306)

74

Obd 2

Code Definition

P1272

Cylinder #2 High To Low Side Open

P1273

Cylinder #3 High To Low Side Open

P1274

Cylinder #4 High To Low Side Open

P1275

Cylinder #5 High To Low Side Open

P1276

Cylinder #6 High To Low Side Open

P1277

Cylinder #7 High To Low Side Open

P1278

Cylinder #8 High To Low Side Open

P1280

Injector Control Pressure Out Of Range Low

P1281

Injector Control Pressure Out Of Range High

P1282

Excessive Injector Control Pressure

P1283

Injector Pressure Regulator Circuit

P1284

Aborted KOER - Injector Control Pressure Failure

P1285

Cylinder Head Overtemperature Condition

P1286

Fuel Pulsewidth In Range But Lower Than Expected

P1287

Fuel Pulsewidth In Range But Higher Than Expected

P1288

Cylinder Head Temperature Sensor Out Of Self Test Range

P1289

Cylinder Head Temperature Sensor Circuit High Input

P1290

Cylinder Head Temperature Sensor Circuit Low Input

P1291

Injector High Side Short To GND Or VBATT - Bank 1

P1292

Injector High Side Short To GND Or VBATT - Bank 2

P1293

Injector High Side Open - Bank 1

P1294

Injector High Side Open - Bank 2

P1295

Injector Multiple Faults - Bank 1

P1296

Injector Multiple Faults - Bank 2

P1297

Injector High Side Switches Shorted Together

P1298

Injector Driver Module Failure

P1299

Cylinder Head Overtemperature Protection Active

P1300

Boost Calibration Fault

P1301

Boost Calibration High

P1302

Boost Calibration Low

P1303

Exhaust Gas Recirculation Calibration Fault

P1304

Exhaust Gas Recirculation Calibration High

P1305

Exhaust Gas Recirculation Calibration Low

P1306

Kickdown Relay Pull-in Circuit

DTC Definitions

Ford (P1307 - P1400)

Obd 2

75 Code Definition

P1307

Kickdown Relay Hold Circuit

P1309

Misfire Monitor AICE Chip Fault, Misfire Monitor Disabled

P1310

Ionization Misfire Detection Module Fault

P1311

Ionization Misfire Detection Module Communication Fault

P1316

IDM Codes Detected

P1340

Camshaft Position Sensor B Circuit

P1351

Ignition Diagnostic Monitor Input Circuit

P1352

Ignition Coil A Primary Circuit

P1353

Ignition Coil B Primary Circuit

P1354

Ignition Coil C Primary Circuit

P1355

Ignition Coil D Primary Circuit

P1356

Ignition Diagnostic Monitor Indicates Engine Not Turning

P1357

Ignition Diagnostic Monitor Pulsewidth Not Defined

P1358

Ignition Diagnostic Monitor Signal Out Of Self Test Range (no CPU OK)

P1359

Spark Output Circuit

P1360

Ignition Coil A Secondary Circuit

P1361

Ignition Coil B Secondary Circuit

P1362

Ignition Coil C Secondary Circuit

P1363

Ignition Coil D Secondary Circuit

P1364

Ignition Coil Primary Circuit

P1365

Ignition Coil Secondary Circuit

P1366

Ignition Spare

P1367

Ignition Spare

P1368

Ignition Spare

P1369

Engine Temperature Light Circuit

P1380

Camshaft Position Actuator Circuit (Bank 1)

P1381

Camshaft Position Timing Over Advanced (Bank 1)

P1383

Camshaft Position Timing Over Retarded (Bank 1)

P1385

Camshaft Position Actuator Circuit (Bank 2)

P1386

Camshaft Position Timing Over Advanced (Bank 2)

P1388

Camshaft Position Timing Over Retarded (Bank 2)

P1390

Octane Adjust Service Pin In Use/Circuit Open

P1400

Differential Pressure Feedback EGR Circuit Low Input

DTC Definitions

Ford (P1401 - P1469)

76

Obd 2

Code Definition

P1401

Differential Pressure Feedback EGR Circuit High Input

P1402

Exhaust Gas Recirculation Metering Orifice Restricted

P1403

Differential Pressure Feedback Sensor Hoses Reversed

P1404

EGR Temperature Sensor Circuit

P1405

Differential Pressure Feedback Sensor Upstream Hose Off Or Plugged

P1406

Differential Pressure Feedback Sensor Downstream Hose Off Or Plugged

P1407

Exhaust Gas Recirculation No Flow Detected

P1408

Exhaust Gas Recirculation Flow Out Of Self Test Range

P1409

EGR Vacuum Regulator Solenoid Circuit

P1410

Auxiliary Air Cleaner Inlet Control Circuit

P1411

Secondary Air Injection Incorrect Downstream Flow Detected

P1413

Secondary Air Injection Monitor Circuit Low Input

P1414

Secondary Air Injection Monitor Circuit High Input

P1431

Misfire Monitor Disabled, Unable to Learn Trigger Wheel Profile

P1442

Evaporative Emission Control System Control Leak Detected

P1443

Evaporative Emission Control System Control Valve

P1444

Purge Flow Sensor Circuit Low Input

P1445

Purge Flow Sensor Circuit High Input

P1450

Unable to Bleed Up Fuel Tank Vacuum

P1451

Evaporative Emission Control System Vent Control Circuit

P1452

Unable to Bleed Up Fuel Tank Vacuum

P1455

Evaporative Emission Control System Control Leak Detected (gross leak/no flow)

P1457

Unable to Pull Fuel Tank Vacuum

P1460

Wide Open Throttle A/C Cutout Circuit

P1461

A/C Pressure Sensor Circuit High Input

P1462

A/C Pressure Sensor Circuit Low Input

P1463

A/C Pressure Sensor Insufficient Pressure Change

P1464

A/C Demand Out Of Self Test Range

P1465

A/C Relay Circuit

P1466

A/C Refrigerant Temperature Sensor Circuit

P1469

Rapid A/C Cycling

DTC Definitions

Ford (P1473 - P1566)

Obd 2

77 Code Definition

P1473

Fan Circuit Open (VLCM)

P1474

Fan Control Primary Circuit

P1479

High Fan Control Primary Circuit

P1480

Fan Secondary Low With Low Fan On

P1481

Fan Secondary Low With High Fan On

P1482

Scp

P1483

Brake Pedal Input Short To Battery

P1484

Fan Driver Circuit Open To Power Ground (VLCM)

P1485

Brake Pedal Input Short To Battery

P1500

Vehicle Speed Sensor

P1501

Vehicle Speed Sensor Out Of Self Test Range

P1502

Vehicle Speed Sensor Intermittent

P1504

Idle Air Control Circuit

P1505

Idle Air Control System At Adaptive Clip

P1506

Idle Air Control Overspeed Error

P1507

Idle Air Control Underspeed Error

P1512

Intake Manifold Runner Control Stuck Closed (Bank 1)

P1513

Intake Manifold Runner Control Stuck Closed (Bank 2)

P1516

Intake Manifold Runner Control Input Error (Bank 1)

P1517

Intake Manifold Runner Control Input Error (Bank 2)

P1518

Intake Manifold Runner Control Stuck Open (Bank 1)

P1519

Intake Manifold Runner Control Stuck Closed (Bank 2)

P1520

Intake Manifold Runner Control Circuit

P1530

A/C Clutch Circuit Open (VLCM)

P1532

Intake Manifold Communication Control Circuit (Bank 2)

P1533

Air Assisted Injector Circuit

P1534

Restraint Deployment Indicator Circuit

P1537

Intake Manifold Runner Control Stuck Open (Bank 1)

P1538

Intake Manifold Runner Control Stuck Open (Bank 2)

P1539

A/C Clutch Circuit Overcurrent/Short (VLCM)

P1549

Intake Manifold Communication Control Circuit (Bank 1)

P1550

Power Steering Pressure Sensor Out Of Self Test Range

P1565

Speed Control Command Switch Out Of Range High

P1566

Speed Control Command Switch Out Of Range Low

DTC Definitions

Ford (P1567 - P1625)

78

Obd 2

Code Definition

P1567

Speed Control Output Circuit

P1568

Speed Control Unable To Hold Speed

P1572

Brake Pedal Switch Circuit

P1573

Throttle Position Not Available

P1574

Throttle Position Sensor Outputs Disagree

P1575

Pedal Position Out Of Self Test Range

P1576

Pedal Position Not Available

P1577

Pedal Position Sensor Outputs Disagree

P1578

ETC Power Less Than Demand

P1579

ETC In Power Limiting Mode

P1580

Electronic Throttle Monitor PCM Override

P1581

Electronic Throttle Monitor Malfunction

P1582

Electronic Throttle Monitor Data Available

P1583

Electronic Throttle Monitor Cruise Disablement

P1584

Throttle Control Detected ETB Malfunction

P1585

Throttle Control Malfunction

P1586

Electronic Throttle To PCM Communication Error

P1587

Throttle Control Modulated Command Malfunction

P1588

Throttle Control Detected Loss Of Return Spring

P1589

Throttle Control Unable To Control To Desired Throttle Angle

P1605

Keep Alive Memory Test Failure

P1610

SBDS Interactive Codes

P1611

SBDS Interactive Codes

P1612

SBDS Interactive Codes

P1613

SBDS Interactive Codes

P1614

SBDS Interactive Codes

P1615

SBDS Interactive Codes

P1616

SBDS Interactive Codes

P1617

SBDS Interactive Codes

P1618

SBDS Interactive Codes

P1618

SBDS Interactive Codes

P1619

SBDS Interactive Codes

P1620

SBDS Interactive Codes

P1625

Fan Driver Circuit Open to Power B+ (VLCM)

DTC Definitions

Ford (P1626 - P1716)

Obd 2

79 Code Definition

P1626

A/C Circuit Open to Power B+ (VLCM)

P1633

Keep Alive Power Voltage Too Low

P1635

Tire/Axle Out of Acceptable Range

P1636

Inductive Signature Chip Communication Error

P1639

Vehicle ID Block Corrupted, Not Programmed

P1640

Powertrain DTCs Available In Another Control Module (Ref.

Pid 0946)

P1641

Fuel Pump Primary Circuit

P1642

CAN Link Circuit

P1642

Fuel Pump Monitor Circuit Low Input [DTC will be deleted on next version]

P1643

CAN Link ECM/TCM Circuit/Network

P1643

Fuel Pump Monitor Circuit Low Input[DTC will be deleted on next version]

P1644

Fuel Pump Speed Control Circuit

P1650

Power Steering Pressure Switch Out Of Self Test Range

P1651

Power Steering Pressure Switch Input

P1656

CAN Link PCM/PCM Circuit Network

P1657

CAN Link Chip Malfunction

P1700

Transmission Indeterminate Failure (Failed to Neutral)

P1701

Reverse Engagement Error

P1702

Transmission Range Sensor Circuit Intermittent

P1703

Brake Switch Out Of Self Test Range

P1704

Transmission Range Circuit Not Indicating Park/Neutral During Self Test

P1705

Transmission Range Circuit Not Indicating Park/Neutral During Self Test

P1709

Park Neutral Position Switch Out Of Self Test Range

P1711

Transmission Fluid Temperature Sensor Out Of Self Test Range

P1712

Transmission Torque Reduction Request Signal

P1713

Transmission Fluid Temperature Sensor In Range Failure (<50 deg F)

P1714

Shift Solenoid A Inductive Signature

P1715

Shift Solenoid B Inductive Signature

P1716

Shift Solenoid C Inductive Signature

DTC Definitions

Ford (P1717 - P1785)

80

Obd 2

Code Definition

P1717

Shift Solenoid D Inductive Signature

P1718

Transmission Fluid Temperature Sensor In Range Failure (>250 deg F)

P1727

Coast Clutch Solenoid Inductive Signature

P1728

Transmission Slip

P1729

4x4L Switch

P1731

1-2 Shift Malfunction

P1732

2-3 Shift Malfunction

P1733

3-4 Shift Malfunction

P1740

Torque Converter Clutch Solenoid Inductive Signature

P1741

Torque Converter Clutch Solenoid Control Error

P1742

Torque Converter Clutch Solenoid Circuit Failed On

P1743

Torque Converter Clutch Solenoid Circuit Failed On

P1744

Torque Converter Clutch Solenoid Circuit Performance

P1746

Pressure Control Solenoid A Open Circuit

P1747

Pressure Control Solenoid A Short Circuit

P1749

Pressure Control Solenoid A Failed Low

P1751

Shift Solenoid A Performance

P1754

Coast Clutch Solenoid Circuit

P1756

Shift Solenoid B Performance

P1760

Pressure Control Solenoid A Short Circuit Intermittent

P1761

Shift Solenoid C Performance

P1762

Overdrive Band Failed Off

P1766

Shift Solenoid D Performance

P1767

Torque Converter Clutch Circuit

P1768

Performance/Normal/Winter Mode Input

P1770

Clutch Solenoid Circuit

P1780

Transmission Control Switch (O/D Cancel) Circuit Out Of Self Test Range

P1781

4X4L Circuit Out Of Self Test Range

P1782

Performance/Economy Switch Circuit Out Of Self Test Range

P1783

Transmission Overtemperature Condition

P1784

Transmission Mechanical Failure - First and Reverse

P1785

Transmission Mechanical Failure - First and Second

DTC Definitions

Ford (P1786 - P1882)

Obd 2

81 Code Definition

P1786

3-2 Downshift Error

P1787

2-1 Downshift Error

P1788

Pressure Control Solenoid B Open Circuit

P1789

Pressure Control Solenoid B Short Circuit

P1795

Inconsistent CAN Level

P1804

4-Wheel Drive High Indicator Circuit Open or Shorted To Ground

P1806

4-Wheel Drive High Indicator Short To Battery

P1808

4-Wheel Drive Low Indicator Circuit Open or Short To Ground

P1810

4-Wheel Drive Low Indicator Short To Battery

P1812

4-Wheel Drive Mode Select Switch Circuit Open

P1815

4-Wheel Drive Mode Select Switch Circuit Short To Ground

P1819

Neutral Safety Switch Input Short To Ground

P1820

Transfer Case LO To HI Shift Relay Circuit Open Or Short To Ground

P1822

Transfer Case LO To HI Shift Relay Coil Short To Battery

P1824

4-Wheel Drive Electric Clutch Relay Open Or Short To Ground

P1826

4-Wheel Drive Electric Clutch Relay Short To Battery

P1828

Transfer Case HI To LO Shift Relay Coil Circuit Open Or Short To Ground

P1830

Transfer Case HI To LO Shift Relay Coil Circuit Short To Battery

P1832

Transfer Case 4-Wheel Drive Solenoid Circuit Open or Short To Ground

P1834

Transfer Case 4-Wheel Drive Solenoid Circuit Short To Battery

P1838

No Shift Motor Movement Detected

P1846

Transfer Case Contact Plate ‘A’ Circuit Open

P1850

Transfer Case Contact Plate ‘B’ Circuit Open

P1854

Transfer Case Contact Plate ‘C’ Circuit Open

P1858

Transfer Case Contact Plate ‘D’ Circuit Open

P1866

Transfer Case Cannot Be Shifted

P1867

Transfer Case Contact Plate General Circuit Failure

P1876

Transfer Case 2-Wheel Drive Solenoid Circuit Open Or Short To Ground

P1877

Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery

P1881

Engine Coolant Level Switch Circuit

P1882

Engine Coolant Level Switch Circuit Short To Ground

DTC Definitions

Ford (P1883 - P1901)

82

Obd 2

Code Definition

P1883

Engine Coolant Level Switch Circuit

P1884

Engine Coolant Level Lamp Circuit Short To Ground

P1891

Transfer Case Contact Plate Ground Return Open Circuit

P1900

Output Shaft Speed Sensor Circuit Intermittent

P1901

Turbine Shaft Speed Sensor Circuit Intermittent

DTC Definitions

General Motors (P1031 - P1188)

Obd 2

83

Manufacturer Specific Codes - General

Motors

Code Definition

P1031

H02 Sensor Heater Control Circuit Problem

P1106

MAP Sensor Circuit Intermittent High or Low Voltage

P1107

MAP Sensor Circuit Intermittent Voltage Low

P1108

BARO to MAP Signal Circuit Comparison Too High

P1111

IAT Sensor Circuit Intermittent Voltage High

P1112

IAT Sensor Circuit Intermittent Voltage Low (except Catera)

P1112

Intake Plenum Switchover Valve Control (Catera)

P1113

Intake Resonance Switchover Valve Control

P1114

ECT Sensor Circuit Intermittent Voltage Low

P1115

ECT Sensor Circuit Intermittent Voltage High

P1120

Throttle Positioning Sensor 1 Circuit

P1121

Throttle Positioning Sensor 1,2 Circuit Performance/ Fuel Injector Secondary System Circuit Low

P1122

TPS Circuit Intermittent Voltage Low

P1125

APP System

P1133

HO2S/O2S Insufficient Switching Sensor 1 Or Bank 1 Sensor 1

P1134

HO2S Transition Time Ratio Bank 1 Sensor 1

P1137

HO2 Sensor Low Voltage During Power Enrichment

P1138

HO2 Sensor High Voltage During Decel Fuel Cutoff

P1139

HO2S Insufficient Switching Bank 1 Sensor 2

P1140

HO2S Transition Time Ratio Bank 1 Sensor 2

P1141

HO2 Sensor Heater Control Circuit (Bank 1 Sensor 2)

P1153

HO2S Insufficient Switching Bank 2 Sensor 1

P1154

HO2S Transition Time Ratio Bank 2 Sensor 1

P1158

HO2 Sensor Shift Rich (Bank 2 Sensor 2)/ Engine Metal Over-Temperature Protection

P1161

HO2 Sensor Heater Control Circuit (Bank 2 Sensor 2)

P1171

Fuel System Lean During Acceleration

P1187

Engine Oil Temperature Sensor Circuit Voltage Low (except 1997 Corvette)

P1187

Engine Oil Pressure Sensor Circuit Voltage Low (1997 Corvette)

P1188

Engine Oil Temperature Sensor Circuit Voltage High (except 1997 Corvette)

DTC Definitions

General Motors (P1188 - P1320)

84

Obd 2

Code Definition

P1188

Engine Oil Pressure Sensor Circuit Voltage High (1997 Corvette)

P1189

Engine Oil Pressure Switch Circuit

P1200

Injector Control Circuit

P1214

Injection Pump Timing Offset

P1215

Generator Driver Circuit

P1216

Fuel Solenoid Response Time Too Short

P1217

Fuel Solenoid Response Time Too Long

P1218

Injection Pump Calibration Circuit

P1220

Throttle Position (TP) Sensor 2 Circuit Fault

P1221

TP Sensor 1, 2 Performance

P1222

Injector Control Circuit Intermittent

P1250

Early Fuel Evaporative (EFE) Heater Circuit

P1257

Boost Control Condition/Supercharge System Overboost

P1260

Fuel Pump Speed Relay Control Circuit

P1271

Accelerator Pedal Position Sensor 1-2 Correlation

P1272

Accelerator Pedal Position Sensor 2-3 Correlation

P1273

Accelerator Pedal Position Sensor 1-3 Correlation

P1275

Boost Control Condition (except 1997-98 Corvette)

P1275

Accelerator Pedal Positioning (APP) Sensor 1 Circuit (1997-98 Corvette)

P1276

Accelerator Pedal Positioning (APP) Sensor 1 Circuit Performance

P1280

Accelerator Pedal Positioning (APP) Sensor 2 Circuit

P1281

Accelerator Pedal Positioning (APP) Sensor 2 Circuit Performance

P1285

Accelerator Pedal Positioning (APP) Sensor 2 Circuit

P1286

Accelerator Pedal Positioning (APP) Sensor 2 Circuit Performance

P1300

Ignition Coil 1 Primary Feedback Circuit

P1305

Ignition Coil 2 Primary Feedback Circuit

P1310

Ignition Coil 3 Primary Feedback Circuit

P1315

Ignition Coil 4 Primary Feedback Circuit

P1320

ICM 4X Reference Circuit Too Many Pulses (except 1996-98

4.0L)

P1320

ICM 4X Reference Circuit Intermittent No Pulses (1996-98

4.0L)

DTC Definitions

General Motors (P1323 - P1406)

Obd 2

85 Code Definition

P1323

ICM 24X Reference Circuit Low Frequency

P1335

Crankshaft Positioning Sensing Circuit

P1336

CKP System Variation Not Learned

P1345

Camshaft To Crankshaft Position Correlation Fault

P1346

CKP Sensor System Variation Not Learned/ Intake Camshaft Position Performance

P1349

Intake Camshaft Position System

P1350

Ignition Control System

P1351

Ignition Control Circuit Voltage High (except 1998 3.1L)

P1351

Ignition Control Circuit Open (1998 3.1L)

P1352

Bypass Circuit Open Or Voltage High

P1359

Ignition Coil Group 1 Control Circuit

P1360

Ignition Coil group 2 Control Circuit

P1361

IC Circuit Not Toggling

P1361

Ignition Control Circuit Voltage Low (Distributor Ignition)

P1362

Bypass Circuit Shorted Or Voltage Low

P1370

ICM 4X Reference Too Many Pulses

P1371

ICM 4X Reference Too Few Pulses (except Caprice, Fleetwood, Impala SS & Roadmaster)

P1371

Distributor Ignition Low Resolution Circuit (Caprice, Fleetwood, Impala SS & Roadmaster)

P1372

CKP Sensor A-B Correlation

P1374

3X Reference Circuit

P1375

ICM 24X Reference Voltage Too High

P1376

Ignition Ground Circuit

P1377

ICM Cam Pulse To 4X Reference Pulse Comparison

P1380

ABS/EBCM/EB(T)CM DTC Detected/Rough Road Data Unusable

P1381

Misfire Detected No EBCM/EB(T)CM/PCM Serial Data

P1401

Exhaust Gas Recirculation (EGR) flow test fault

P1403

EGR Error

P1404

EGR Valve Closed Pintle Position

P1404

EGR Valve Stuck Open Or Circuit Performance

P1405

EGR Error

P1406

EGR Valve Pintle Position Circuit

DTC Definitions

General Motors (P1408 - P1527)

86

Obd 2

Code Definition

P1408

MAP Sensor Circuit

P1410

Fuel Tank Pressure System

P1415

AIR System Bank 1

P1416

AIR System Bank 2

P1431

Fuel Level Sensor 2 Circuit Performance

P1432

Fuel Level Sensor 2 Circuit Voltage Low

P1433

Fuel Level Sensor 2 Circuit Voltage High

P1441

EVAP System Flow During Non-Purge

P1442

EVAP Vacuum Switch Circuit

P1450

BARO Sensor Circuit

P1451

BARO Sensor Circuit

P1460

Cooling Fan Circuit (except Catera)

P1460

Misfire Detected With Low Fuel (Catera)

P1483

Engine Cooling System Performance

P1500

Starter Signal Circuit

P1501

Theft Deterrent System

P1502

Theft Deterrent System No Password Received

P1503

Theft Deterrent System Password Improper

P1508

Idle Air Control (IAC) System Low RPM

P1509

IAC System High RPM

P1510

Back-Up Power Supply

P1511

Throttle Control System- Backup System Performance

P1514

TAC System MAF Performance

P1515

Command vs Actual Throttle Position Performance (PCM)

P1516

Command vs Actual Throttle Position Performance (TAC Module)

P1517

TAC Module Processor

P1518

PCM To TAC Module Serial Data Circuit

P1519

Throttle Actuator Control Module

P1520

Park/Neutral Position Switch Circuit, Gear Indicator System

P1523

Throttle Closed Position Performance

P1524

TPS Learned Closed Throttle Angle Degrees Out Of Range

P1526

TPS Learn Not Completed

P1527

Trans Range/Pressure Switch Comparison

DTC Definitions

General Motors (P1530 - P1571)

Obd 2

87 Code Definition

P1530

Ignition Timing Adjustment Switch Circuit

P1530

A/C Refrigerant Pressure Sensor Error

P1531

Low Air Conditioning Refrigerant Charge

P1532

A/C Evaporator Temperature Circuit Voltage Low

P1533

A/C Low Side Temperature Sensor Circuit

P1535

A/C/ High Side Temperature Sensor Circuit

P1536

A/C System ECT Overtemperature

P1537

A/C Request Circuit Voltage Low

P1538

A/C Request Circuit Voltage High

P1539

A/C High Pressure Switch Circuit Voltage High

P1540

A/C System High Pressure

P1542

A/C System High Pressure/High Temperature

P1543

A/C System Performance

P1545

A/C Clutch Relay Control Circuit

P1546

A/C Clutch Relay Control Circuit Voltage Low (except 1996-98 Camaro/Firebird & 1997-98 Corvette)

P1546

A/C Clutch Status Circuit Voltage Low (1996-98 Camaro/ Firebird & 1997-98 Corvette)

P1550

Stepper Motor Speed Control

P1554

Speed Control Status Circuit

P1555

Electronic Variable Orifice Fault (Saturn)

P1558

Speed Control (SPS Low)

P1560

Speed Control System/Transaxle Not In Drive

P1561

Speed Control Vent Solenoid

P1562

Speed Control Vacuum Solenoid

P1564

Speed Control System/Vehicle Acceleration Too High (except Catera)

P1564

ECM Battery Voltage Loss (Catera)

P1565

Speed Control Servo Position Sensor

P1566

Speed Control System/Engine RPM Too High

P1567

Speed Control Switches/ABCS Active

P1568

Speed Control (SPS High)

P1570

Speed Control System/Traction Control Active

P1571

TCS Desired Torque Circuit (except 4.0L, 4.6L & 1997-98 5.7L Corvette)

DTC Definitions

General Motors (P1571 - P1610)

88

Obd 2

Code Definition

P1571

Traction Control System PWM Circuit No Frequency (4.0L & 4.6L)

P1571

ASR Desired Torque (1997-98 5.7L Corvette)

P1572

Traction Control System Active Circuit Voltage Low Too Long

P1573

PCM/EBTCM Serial Data Circuit

P1573

Engine Hot Lamp Control Circuit

P1574

EBTCM System/Stop Lamp Circuit Voltage High (except 1997-98 Corvette)

P1574

Stop Lamp Control Circuit (1997-98 Corvette)

P1575

Extended Travel Brake Switch Circuit Voltage High

P1576

Brake Booster Vacuum Sensor Circuit Voltage High

P1577

Brake Booster Vacuum Sensor Circuit Voltage Low

P1578

Brake Booster Vacuum Sensor Circuit Low Vacuum

P1579

Park/Neutral To Drive/Reverse At High Throttle Angle

P1580

Cruise Control Module Move Circuit, Low Voltage

P1581

Cruise Control Module Move Circuit, High Voltage

P1582

Cruise Control Module Direction Circuit, Low Voltage

P1583

Cruise Control Module Direction Circuit, High Voltage

P1584

Cruise Control Disabled

P1585

Cruise Control Inhibit Output Circuit

P1586

Cruise Control Brake Switch 2 Circuit

P1599

Engine Stall Or Near Stall Detected

P1600

PCM Battery

P1600

Serial Communication Between PCM & TCM

P1601

Loss of Serial Communication (Except Catera)

P1601

ECM Overtemperature

P1602

Loss Of EBC/EBTCM Serial Data (Except Catera)

P1602

KS Module Circuit (Catera)

P1603

Loss Of SDM Serial Data

P1604

Loss of IPC Serial Data

P1605

Loss of HVAC Serial Data

P1607

Engine Oil Level Switch Circuit

P1610

Loss Of PZM Serial Data (1996-97 Except 1997 Cutlass & Malibu)

P1610

Failure With Body Function Controller (1997 Cutlass & Malibu)

DTC Definitions

General Motors (P1610 - P1642)

Obd 2

89 Code Definition

P1610

Standard Body Module Series Data CKT (1998)

P1611

Loss Of CVRTD Serial Data

P1617

Engine Oil Level Switch Circuit

P1619

Engine Oil Lite Monitor Reset Circuit

P1620

Low Engine Coolant Level (Saturn)

P1621

PCM Memory Performance (Except 1998 5.7L)

P1621

VCM EEPROM Performance (1998 5.7L)

P1623

PCM Prom Error/ Transaxle Temperature Pull-Up Resistor Fault (Saturn Z body)

P1624

Customer Snapshot Data Available (Saturn)

P1625

TCM Flash Checksum Fault (Saturn)

P1626

Theft Deterrent System Fuel Enable Circuit

P1627

A/D Performance

P1628

PCM Engine Control Temp Pull-Up Resistor

P1629

Theft Deterrent System Fuel Enable Circuit Improper Signal Detected During Engine Cranking (Except 1997-98 2.2L, 2.4L,

3.1L & 3.8L)

P1629

Theft Deterrent Crank Signal Malfunction (1997-98 2.2L,

2.4L, 3.1L & 3.8L)

P1630

Theft Deterrent System/PCM/VCM in Learn Mode

P1631

Theft Deterrent System Password Improper

P1632

Theft Deterrent System Fuel Disabled

P1633

Ignition Supplemental Power Circuit Voltage Low

P1634

Ignition 1 Power Circuit Voltage Low

P1635

5 Volt Reference (A Or 1) Circuit

P1637

Alternator L Terminal Circuit

P1638

Alternator F Terminal Circuit

P1639

5 Volt Reference (B Or 2) Circuit

P1640

Driver 1 Input Voltage High

P1641

MIL Control Circuit (Except 5.7L VINs P & 5 & 1998 3.1L & 3.8L)

P1641

Fan Control Relay 1 Control Circuit (5.7L VINs P & 5)

P1641

A/C Relay Control Circuit (1998 3.1L & 3.8L)

P1642

Vehicle Speed Output Circuit (Except 3.4L, 5.7L VINs P & 5 &

1998 3.8L)

P1642

Fan Control Relay 2 & 3 Control Circuit (5.7L VINs P & 5)

DTC Definitions

General Motors (P1642 - P1663)

90

Obd 2

Code Definition

P1642

AIR Control Circuit (3.4L)

P1642

Change Oil Lamp Control Circuit (1998 3.1L Lumina & Monte Carlo)

P1643

Fuel Pump PWM Control Circuit (Except 5.7L VINs P & 5)

P1643

Engine RPM Output Circuit (5.7L VINs P & 5)

P1644

Delivered Torque Output Circuit

P1645

Boost Control Solenoid Circuit (Except 4.0L & 4.6L)

P1645

EVAP Solenoid Output Circuit (4.0L & 4.6L)

P1646

Boost Control Solenoid Control Circuit (Except 4.0L & 4.6L)

P1646

EVAP Vent Valve Output Circuit (4.0L & 4.6L)

P1650

Driver 2 Input Voltage High

P1651

Fan On Relay Control Circuit/Output Driver Module (Quad Driver) 'B' Quickset Fault (Saturn)

P1651

Fan 1 Relay Control Circuit

P1652

Fan 2 Relay Control Circuit (Except Cadillac & Corvette)

P1652

VSS Output Circuit (1996 Corvette)

P1652

Powertrain Induced Chassis Pitch Output Circuit (1997- 98 Corvette)

P1652

Lift/Drive Output Circuit (Cadillac)

P1653

TCS Delivered Torque Control Circuit (Except Caprice, Roadmaster & 1998 3.8L)

P1653

Oil Level Lamp Control Circuit (Caprice, Fleetwood & Roadmaster)

P1653

Fuel Level Output Control Circuit (1998 3.8L)

P1654

A/C Relay Control Circuit (Except 4.0L & 4.6L)

P1654

Cruise Disable Output Circuit (4.0L & 4.6L)

P1655

EVAP Purge Solenoid Control Circuit

P1656

Wastegate Solenoid Control Circuit

P1657

Skip Shift 1-4 Upshift

P1660

Cooling Fan Control Circuits

P1661

MIL Control Circuit

P1662

Speed Control Inhibit Control Circuit

P1663

Alternator Lamp Control Circuit (Except Caprice, Fleetwood & Roadmaster)

P1663

Change Oil Lamp Control Circuit (Caprice, Fleetwood & Roadmaster)

DTC Definitions

General Motors (P1664 - P1825)

Obd 2

91 Code Definition

P1664

Skip Shift 1-4 Upshift Lamp Control Circuit

P1665

DBCM/DBTCM Serial Data Circuit (1996-97)

P1665

EVAP Vent Valve Solenoid Control Circuit (1998)

P1667

Reverse Inhibitor Solenoid Control Circuit (1996-97)

P1667

Fuel Pump Speed Control Circuit (1998)

P1670

QDM 4 Circuit

P1671

MIL Control Circuit

P1671

Oil Change Lamp Control Circuit

P1672

Low Engine Oil Level Lamp Circuit

P1673

Engine Hot Lamp Control Circuit

P1674

Tachometer Control Circuit

P1675

EVAP Vent Solenoid Control Circuit

P1676

EVAP Canister Purge Solenoid Control CKT

P1689

TCS Delivered Torque Control Circuit

P1700

MIL Requested By TCM

P1701

MIL Request Circuit

P1740

Torque Management Request Circuits, Transmission & Traction Control (Except Catera)

P1740

Torque Control/Management Request Circuits (Catera)

P1760

Transmission Control Module Supply Voltage Interrupted

P1780

Park Neutral Position Switch Circuit

P1781

Engine Torque Signal Circuit

P1792

ECM To Transmission Control Module Engine Coolant Signal

P1800

ECM To Transmission Control Module Engine Coolant Signal

P1810

ATF Pressure Manual Valve Position Switch Malfunction

P1811

Long Shift & Max Adapt

P1812

TOT Condition

P1814

Torque Converter Overstress

P1819

Internal Mode Switch - No Start

P1820

Internal Mode Switch Circuit 'A' Low

P1822

Internal Mode Switch Circuit 'B' Low

P1823

Internal Mode Switch Circuit 'P' Low

P1825

Internal Mode Switch - Invalid Range

DTC Definitions

General Motors (P1826 - P1895)

92

Obd 2

Code Definition

P1826

Internal Mode Switch - Invalid Range

P1835

Kickdown Switch Circuit

P1842

1-2 Shift Solenoid Circuit Low Input

P1843

1-2 Shift Solenoid Circuit High Input

P1845

2-3 Shift Solenoid Circuit Low Input

P1847

2-3 Shift Solenoid Circuit High Input

P1850

Brake Band Apply Solenoid

P1860

TCC PWM Solenoid Circuit

P1864

TCC Enable Solenoid Circuit

P1868

Transmission Fluid Life

P1870

Trans Component Slipping

P1875

4WD Low Switch Circuit Electrical

P1886

Transaxle Shift, Timing Solenoid Performance

P1887

TCC Release Switch Malfunction

P1890

Throttle Position Signal Input

P1895

Engine Torque Delivered Circuit

DTC Definitions

Honda (P1106- P1382)

Obd 2

93

Manufacturer Specific Codes - Honda

Code Definition

P1106

BARO Circuit Range/Performance

P1107

BARO Circuit Low Input

P1108

BARO Circuit High Input

P1121

Throttle Position Lower Than Expected

P1122

Throttle Position Higher Than Expected

P1128

MAP Lower Than Expected

P1129

MAP Higher Than Expected

P1149

Primary HO2S (Sensor 1) Circuit Range/Performance Problem

P1162

Primary HO2S (No. 1) Circuit Malfunction

P1163

Primary HO2S (No. 1) Circuit Slow Response

P1164

Primary HO2S (No. 1) Circuit Range/Performance

P1165

Primary HO2S (No. 1) Circuit Range/Performance

P1166

Primary HO2S (No. 1) Heater System Electrical

P1167

Primary HO2S (No. 1) Heater System

P1168

Primary HO2S (No. 1) LABEL Low Input

P1169

Primary HO2S (No. 1) LABEL High Input

P1253

VTEC System Malfunction

P1257

VTEC System Malfunction

P1258

VTEC System Malfunction

P1259

VTEC System Malfunction

P1297

Electrical Load Detector Circuit Low Input

P1298

Electrical Load Detector Circuit High Input

P1300

Multiple Cylinder Misfire Detected

P1336

CSF Sensor Intermittent Interruption

P1337

CSF Sensor No Signal

P1359

CKP/TDC Sensor Connector Disconnection

P1361

TDC Sensor Intermittent Interruption

P1362

TDC Sensor No Signal

P1366

TDC Sensor No. 2 Intermittent Interruption

P1367

TDC Sensor No. 2 Signal

P1381

Cylinder Position Sensor Intermittent Interruption

P1382

Cylinder Position Sensor No Signal

DTC Definitions

Honda (P1456 - P1687)

94

Obd 2

Code Definition

P1456

EVAP Emission Control System Leak Detected (Fuel Tank System)

P1457

EVAP Emission Control System Leak Detected (Control Canister System)

P1459

EVAP Emission Purge Flow Switch Malfunction

P1491

EGR valve Lift Insufficient Detected

P1498

EGR Valve Lift Sensor High Voltage

P1508

IAC Valve Circuit Failure

P1509

IAC Valve Circuit Failure

P1519

Idle Air Control Valve Circuit Failure

P1607

EGM/PGM Internal Circuit Failure A

P1655

SEA/SEFA/TMA/TMB Signal Line Failure

P1660

A/T FI Signal A Circuit Failure

P1681

A/T FI Signal A Low Input

P1682

A/T FI Signal A High Input

P1686

A/T FI Signal B Low Input

P1687

A/T FI Signal B Low Input

DTC Definitions

Toyota (P1100- P1346)

Obd 2

95

Manufacturer Specific Codes - Toyota

Code Definition

P1100

BARO Sensor Circuit malfunction

P1120

Accelerator Pedal Position Sensor Circuit Malfunction

P1121

Accelerator Pedal Position Sensor Range/Performance Problem

P1125

Throttle Control Motor Circuit Malfunction

P1126

Magnetic Clutch Circuit Malfunction

P1127

ETCS Actuator Power Source Circuit Malfunction

P1128

Throttle Control Motor Lock Malfunction

P1129

Electric Throttle Control System Malfunction

P1130

Air-Fuel Sensor Circuit Range/Performance

P1133

Air-Fuel Sensor Circuit Response Malfunction

P1135

Air-Fuel Sensor Heater Circuit Response Malfunction

P1150

A/F Sensor Circuit Range/Performance Malfunction

P1153

A./F Sensor Circuit Response Malfunction

P1155

A/F Sensor Heater Circuit Malfunction

P1200

Fuel Pump Relay Circuit Malfunction

P1300

Igniter Circuit Malfunction No. 1

P1305

Igniter Circuit Malfunction No. 2 (1998-2000 Land Cruiser, 2000 Celica & Tundra)

P1310

Igniter Circuit Malfunction No. 2 (Except 1998-2000 Land Cruiser, 2000 Celica & Tundra)

P1310

Igniter Circuit Malfunction No. 3 (1998-2000 Land Cruiser, 2000 Celica & Tundra)

P1315

Igniter Circuit Malfunction No. 4 (1998-2000 Land Cruiser, 2000 Celica & Tundra)

P1320

Igniter Circuit Malfunction No. 5 (1998-2000 Land Cruiser & 2000 Tundra)

P1325

Igniter Circuit Malfunction No. 6 (1998-2000 Land Cruiser & 2000 Tundra)

P1330

Igniter Circuit Malfunction No. 7 (1998-2000 Land Cruiser & 2000 Tundra)

P1335

No CKP Sensor Signal Engine Running

P1340

Igniter Circuit Malfunction No. 8 (1998-2000 Land Cruiser & 2000 Tundra)

P1346

VVT Sensor /Camshaft Position Sensor Circuit Range/ Performance Problem (Bank 1)

DTC Definitions

Toyota (P1349 - P1780)

96

Obd 2

Code Definition

P1349

VVT System Malfunction

P1400

Sub-Throttle Position Sensor Malfunction

P1401

Sub-Throttle Position Sensor Range/Performance Problem

P1405

Turbo Pressure Sensor Circuit Malfunction

P1406

Turbo Pressure Sensor Range/Performance Problem

P1410

Egr

Valve Position Sensor Circuit Malfunction

P1411

EGR Valve Position Sensor Circuit Ranger/Performance

P1500

Starter Signal Circuit Malfunction

P1510

Boost Pressure Control Circuit Malfunction

P1511

Boost Pressure Low Malfunction

P1512

Boost Pressure High Malfunction

P1520

Stop Lamp Switch Signal Malfunction

P1565

Cruise Control Main Switch Circuit Malfunction

P1600

ECM BATT Malfunction

P1605

Knock Control CPU Malfunction

P1630

Traction Control System Malfunction

P1633

ECM Malfunction ECTS Circuit

P1645

Body ECU Malfunction

P1652

IACV Control Circuit Malfunction

P1656

OCV Circuit Malfunction

P1658

Waste Gate Valve Control Circuit Malfunction

P1661

EGR Circuit Malfunction

P1662

EGR By-Pass Valve Control Circuit Malfunction

P1690

OCV Circuit Malfunction

P1692

OCV Open Malfunction

P1693

OCV Closed Malfunction

P1780

PNP Switch Malfunction

Glossary

Glossary Of Terms And Abbreviations

Obd 2

97

Introduction

This Glossary contains definitions for abbreviations and terms you may find in this manual or in your vehicle service manual.

Glossary Of Terms And Abbreviations

CARB – California Air Resources Board CCM – Central Control Module Computer Control System – An electronic control system, consisting of an on-board computer and related sensors, switches and actuators, used to ensure peak performance and fuel efficiency while reducing pollutants in the vehicle’s emissions. DIY – Do-It-Yourself DLC – Data Link Connector Drive Cycle – An extended set of driving procedures that takes into consideration the various types of driving conditions encountered in real life. Driving Condition – A specific environmental or operation condition under which a vehicle is operated; such as starting the vehicle when cold, driving at steady speed (cruising), accelerating, etc. DTC(s) – Diagnostic Trouble Code(s) EGR – Exhaust Gas Recirculation EPA – Environmental Protection Agency EVAP – Evaporative Emissions System Fault Code – See DTCs Freeze Frame – A digital representation of engine and/or emissions system conditions present when a fault code was recorded. FTP – Fuel Tank Pressure Generic Code – A DTC that applies to all OBD 2 compliant vehicles. I/M Readiness – An indication of whether or not a vehicle’s emissions-related system are operating properly and are ready for Inspection and Maintenance testing. I/M Test / Emissions Test / Smog Check – A functional test of a vehicle to determine if tailpipe emissions are within Federal/State/Local requirements. LCD – Liquid Crystal Display LED – Light Emitting Diode

Glossary

Glossary Of Terms And Abbreviations

98

Obd 2

Manufacturer Specific Code – A DTC that applies only to OBD 2 compliant vehicles made by a specific manufacturer. MIL – Malfunction Indicator Lamp (also referred to as “Check Engine” light OBD 1 – On-Board Diagnostics Version 1 (also referred to as

“Obd I”)

OBD 2 – On-Board Diagnostics Version 2 (also referred to as

“Obd Ii”)

On-Board Computer – The central processing unit in the vehicle’s computer control system. PCM – Powertrain Control Module Pending Code – A code recorded on the “first trip” for a “two-trip” code. If the fault that caused the code to be set is not detected on the second trip, the code is automatically erased. Trip Drive Cycle – Vehicle operation that provides the necessary driving condition to enable a vehicle Monitor to run and complete its diagnostic testing. VECI – Vehicle Emission Control Information Decal

Warranty and Servicing

Obd 2

99

Limited One Year Warranty

The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and workmanship under normal use and maintenance for a period of one (1) year from the date of original purchase. If the unit fails within the one (1) year period, it will be repaired or replaced, at the Manufacturer’s option, at no charge, when returned prepaid to the Service Center with Proof of Purchase. The sales receipt may be used for this purpose. Installation labor is not covered under this warranty. All replacement parts, whether new or remanufactured, assume as their warranty period only the remaining time of this warranty. This warranty does not apply to damage caused by improper use, accident, abuse, improper voltage, service, fire, flood, lightning, or other acts of God, or if the product was altered or repaired by anyone other than the Manufacturer’s Service Center. The Manufacturer, under no circumstances shall be liable for any consequential damages for breach of any written warranty of this unit. This warranty gives you specific legal rights, and you may also have rights, which vary from state to state. This manual is copyrighted with all rights reserved. No portion of this document may be copied or reproduced by any means without the express written permission of the Manufacturer. THIS WARRANTY IS NOT TRANSFERABLE. For service, send via U.P.S. (if possible) prepaid to Manufacturer. Allow 3-4 weeks for service/repair.

Service Procedures

If you have any questions, require technical support or information on UPDATES and OPTIONAL ACCESSORIES, please contact your local store, distributor or the Service Center. USA & Canada: (800) 544-4124 (6:00 AM-6:00 PM, 7 days a week PST) All others: (714) 241-6802 (6:00 AM-6:00 PM, 7 days a week

Pst)

FAX: (714) 432-3979 (24 hr.) Web: www.innova.com

Innova Electronics Corp. Instruction MRP #93-0068 Rev. B

Product Design & Copyright

© 2012 ® 17352 Von Karman Ave. Irvine, CA 92614 www.innova.com