e04pixma-g2020

Canon PIXMA G2020 E04 error: How to fix

The Canon PIXMA G2020 E04 error indicates that the printhead is either improperly installed or not detected by the main controller. This common issue stops all printing operations until the hardware connection is verified. Most cases are resolved by a simple cleaning and reseating of the printheads.

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Common causes

  • 1Dirty or oxidized gold contacts on the printhead.
  • 2Misaligned printhead within the carriage mount.
  • 3Internal electrical short circuit.
  • 4Firmware communication error during ink processing.

Solutions

Diagnóstico rápido

If your Canon PIXMA G2020 shows error E04, check if you recently serviced the ink tanks. The printer requires a perfect electrical contact between the printhead and the carriage board.

Solución paso a paso

  1. Access: Lift the scanner top unit until it stays in place.
  2. Remove: Release the head locks and gently pull out the printheads.
  3. Clean: Clean the electrical contacts with a dry lint-free cloth.
  4. Reinsert: Reinstall the printheads, listening for a solid click into the mount.

Prevención y mantenimiento

Never touch the gold chip area with bare fingers. Use official GI-11 series ink to avoid nozzle clogging and sensor errors.

Cuándo llamar a un técnico

If the E04 error persists, the printhead might have suffered an internal electrical fault and require replacement.

Ficha técnica del equipo

  • Technology: Continuous Ink Supply System
  • Resolution: Up to 4800 x 1200 dpi
  • Connectivity: High-Speed USB
  • Compatible supply: GI-11 Ink Bottles
  • Intended use: Home / Small Office
  • Official drivers / firmware

Steps to follow

  1. 1

    Open cover

    Lift the scanner unit to access the printhead carriage.

  2. 2

    Reseat printheads

    Remove the printheads and reinsert them until they click firmly.

  3. 3

    Restart

    Close the unit and allow the printer to auto-clean.

Frequently asked questions

The error E04 indicates that the printhead is not correctly recognized or established, often due to poor connection.

Avoid touching the gold contacts on the back of the printheads to prevent electrical failure.

Always use genuine GI-11 ink bottles for the G2020 series to ensure optimal performance.

Keep the printer in a clean, dust-free environment and use it regularly to keep the ink flowing.