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P04CD Powertrain

Fuel Fill Door Open Request Sensor or Switch Stuck On

The open-request switch is stuck in the active state - the ECU continuously reads a request to open the fuel fill door. Either the switch is mechanically held closed or the line is shorted to its active level.

Affected components

  • Fuel fill door request switch

Common causes

  • High likelihood: Switch contact mechanically stuck closed
  • Low likelihood: Carbon or debris buildup preventing free movement
  • Low likelihood: Component wear with age - mechanical play

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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