P04B5
Fuel Fill Door Stuck Open
On vehicles with a motorised fuel fill door (no manual lever) the actuator and position switch report that the door is mechanically stuck open. The motor cannot retract it, typically due to a frozen or dirty hinge, broken cable, or jammed actuator.
On vehicles with a motorised fuel fill door (no manual lever) the actuator and position switch report that the door is mechanically stuck open. The motor cannot retract it, typically due to a frozen or dirty hinge, broken cable, or jammed actuator.
Common causes
- high
Hinge jammed by ice, dirt or debris
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-280
- medium
Actuator linkage or motor broken
A plausible cause — test and verify before replacing parts.
Typical part cost: $70-280
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P04B5 mean?
P04B5 means "Fuel Fill Door Stuck Open". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P04B5?
hinge jammed by ice, dirt or debris; actuator linkage or motor broken; carbon or debris buildup preventing free movement — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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