P04B6
Fuel Fill Door Stuck Closed
Same as P04B5 with the door stuck closed - the user cannot refuel until the fault is cleared.
Same as P04B5 with the door stuck closed - the user cannot refuel until the fault is cleared.
Common causes
- high
Latch jammed or actuator stalled
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-280
- low
Carbon or debris buildup preventing free movement
Less common, but worth ruling out after the more likely causes.
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 P04B6 mean?
P04B6 means "Fuel Fill Door Stuck Closed". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P04B6?
latch jammed or actuator stalled; carbon or debris buildup preventing free movement; component wear with age - mechanical play — 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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