Why codes differ between printers
Every manufacturer uses its own numbering, and the same number can mean different things on different models. Treat any list of codes you find online with care unless it matches your exact model. The message family, however, is a reliable guide to what is going on.
Paper and feed messages
Paper jam, paper mismatch, tray empty or “load paper” messages. These are usually safe to deal with yourself: check trays, sizes and the paper path. If the message returns with paper loaded correctly, a sensor or roller may be at fault.
Ink, toner and supply messages
Cartridge not recognised, low or empty supply, drum end of life, maintenance box full. Check the cartridge is the right one, fully seated with any tape removed and contacts clean. Some supply counters must be reset after fitting a new part, which your manual describes.
Connection and memory messages
Network disconnected, offline, memory full or job too complex. These relate to the connection or the job rather than the hardware. Cancelling the job and sending a simpler test page tells you which.
Service, fatal and mechanical errors
Messages that mention service, fatal error, carriage, fuser, motor or scanner, or a code that returns after switching off and on. These point to hardware. Repeated restarts rarely help and can sometimes make things worse. Note the code and book a repair.
What to note before asking for help
- The exact code and wording, or a photo of the display.
- The full model number (see our guide to finding it).
- What the printer was doing when the error appeared.
- Whether it happens every time or only sometimes.
Including these in your repair request shortens the diagnosis.
General guidance only. Follow your printer’s manual and safety warnings, and unplug the printer before reaching inside.
