⚠
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
