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warning HP
Error Code Control panel message types
Indicates various error states communicated through the control panel interface, including low supplies notifications and hardware faults.
? What Causes This
Issues with print supply levels or malfunctioning hardware components can trigger these messages.
✓ How to Fix It
Resolve by replacing cartridges when indicated as very low; follow specific recommendations provided for each type of code/message displayed.
Source: page 169 of the official manual
From the manual
This error code appears in:
HP Laserjet Enterprise 600 Printer M602