e003-0000imageCLASS LBP226dw

Canon imageCLASS LBP226dw error E003: Thermistor Issue

The Canon imageCLASS LBP226dw error E003 signals a reading fault from the fuser thermistor. This part monitors heat; if the value is incorrect, the system locks up. Why is my Canon LBP226dw showing error E003? It may stem from power fluctuations or toner residue buildup on the sensor.

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Common causes

  • 1Sensor contamination: Toner buildup.
  • 2Thermal failure: Fuser resistance out of spec.
  • 3Power issue: Unstable electrical supply.

Solutions

Diagnóstico rápido

This code appears when the printer cannot confirm the fuser is hot enough for printing after startup.

Solución paso a paso

  1. Power down: Turn off and unplug the unit completely.
  2. Cleaning: Check for any debris in the paper path.
  3. Reboot: Plug into a wall socket after a 10-minute cooldown.

Prevención y mantenimiento

Avoid low-quality paper jams, as paper remnants can cover thermal sensors and cause false readings.

Cuándo llamar a un técnico

If the error reappears immediately, the sensor is likely damaged or the fuser itself has a failure.

Ficha técnica del equipo

Steps to follow

  1. 1

    Power down

    Switch off and unplug for 10 minutes.

  2. 2

    Cleaning

    Clear out any paper residue inside the path.

  3. 3

    Reboot

    Restart after cool down.

Frequently asked questions

The thermistor detects that the fuser temperature isn't rising properly.

A reboot often solves minor errors, but persistent sensor damage requires service.

057 series cartridges ensure thermal unit reliability.

Clean every 6 months to avoid toner dust on sensors.

Canon imageCLASS LBP226dw error E003: Thermistor Issue | Vimazdev