e805-0000imageCLASS MF275dw

Canon imageCLASS MF275dw error E805: Fan Troubleshooting

The Canon imageCLASS MF275dw error E805 signals a failure of the internal cooling fan. When the sensor detects that the fan is obstructed or malfunctioning, the system triggers this error to prevent heat-related component damage. Identifying physical blockages is the priority in solving this issue.

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Common causes

  • 1Dust buildup: Physical barrier preventing fan rotation.
  • 2Worn bearing: Mechanical degradation of the fan motor.
  • 3Environment: Lack of airflow due to tight installation.
  • 4Internal fault: Connectivity issue within the fan wire harness.

Solutions

Diagnóstico rápido

If you see the E805 code, check if the printer feels unusually hot. The internal fan's RPM is below the threshold, indicating mechanical friction or debris.

Solución paso a paso

  1. Unplug the printer completely.
  2. Check the side air vents for dust clumps.
  3. Clean the vents carefully with an air duster.
  4. Power up after waiting to see if the error clears.

Prevención y mantenimiento

Ensure at least 10cm of space around the printer. Periodic cleaning of the air intake vents keeps the motor running smoothly.

Cuándo llamar a un técnico

If the fan remains motionless after cleaning, the motor likely has a worn-out bearing and requires replacement by a qualified professional.

Ficha técnica del equipo

  • Technology: Laser Monochrome
  • Print Speed: 30 ppm
  • Connectivity: Wi-Fi, Ethernet, USB
  • Compatible Consumable: Canon 071 / 071H series
  • Recommended Use: Professional office environment
  • Drivers / official firmware

Steps to follow

  1. 1

    Check Air Vents

    Inspect the side ventilation grids for any dust or debris that might be stopping the internal fan.

  2. 2

    Clear Obstructions

    Use a low-pressure air duster to blow out any loose dust around the vents to ensure the fan can spin freely.

  3. 3

    Power Reset

    Turn off the printer, unplug it, and wait 5 minutes before restarting to re-check the fan status.

Frequently asked questions

The E805 code indicates a cooling fan malfunction. The system shuts down if the fan doesn't reach the required speed to prevent internal overheating.

No, persistent use can lead to serious damage to the mainboard due to inadequate ventilation and high temperatures.

No, it is not related to the toner (Canon 071). However, keeping the inside clean of paper dust ensures the fan remains clear of particles.

Keep your printer in an open space and clean the external ventilation vents every few months to prevent dust buildup.