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warning HP
Error Code Used or counterfeit cartridge in use
Used or counterfeit toner cartridge detected — cartridge is not a new genuine product.
? What Causes This
Cartridge is a used, refurbished, or counterfeit product.
✓ How to Fix It
Replace with a new, genuine HP toner cartridge.
Source: page 8 of the official manual
From the manual
This error code appears in:
HP Color Laserjet Pro M255 M256 Printer