⚠
warning HP
Error Code E4
Toner cartridge is very low on toner and may soon need replacement.
? What Causes This
The toner cartridge has been used extensively and is running low on toner.
✓ How to Fix It
- Press the Start Copy button to continue printing with low toner.
- Order a replacement HP toner cartridge.
- When toner is depleted, replace the cartridge following the setup instructions.
Source: page 7 of the official manual
From the manual
Affected HP Products
HP LaserJet Pro MFP M126 Plus Multifunction Printer
Printers
HP Smart Tank 750
Unknown
HP Smart Tank 6000 Printer
Printers
HP Deskjet Ink Advantage 2800 All IN One Printer
Printers
HP Deskjet GT 5810 All-in-One Printer
Printers
HP Smart Tank 510 Wireless All-in-One
Unknown
HP Deskjet GT 5820 All-in-One Printer
Printers