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Canon Printer Error E04 — Ink Cartridge Not Recognized

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Overview

Canon error E04 means the printer cannot recognize one or more installed ink cartridges, caused by dirty contacts, incompatible cartridges, or chip failure.

Key Details

  • E04 indicates cartridge communication failure between the cartridge chip and printer
  • Each Canon cartridge has a small IC chip that communicates ink level and cartridge identity
  • Aftermarket and refilled cartridges may have incompatible or failed chips
  • Dirty or oxidized electrical contacts on the cartridge or carriage prevent communication
  • Some Canon printers require a specific cartridge order in the carriage

Common Causes

  • Dirty electrical contacts on the cartridge or carriage
  • Incompatible third-party cartridge with non-functional chip
  • Cartridge not fully seated in the carriage slot
  • Cartridge chip damaged or defective
  • Protective tape not fully removed from new cartridge contacts

Steps

  1. 1Remove the cartridge and verify all protective tape and plastic is removed from contacts and nozzle
  2. 2Clean cartridge contacts with a dry lint-free cloth — also clean the carriage contacts inside the printer
  3. 3Reinstall the cartridge firmly until it clicks into place
  4. 4Try installing cartridges one at a time to identify which one is not recognized
  5. 5If using third-party cartridges, try genuine Canon cartridges to rule out chip compatibility

Tags

canonerror-e04ink-cartridgenot-recognizedcontacts

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Frequently Asked Questions

Many third-party cartridges work, but some have chip compatibility issues. If E04 appears with aftermarket cartridges, the chip may not be recognized.