P04DC
Fuel Fill Door Position Sensor Circuit Range or Performance
Same as P04B8 with the signal in plausible range yet not matching the actuator command - door reports closed when motor commanded open, or vice versa.
Same as P04B8 with the signal in plausible range yet not matching the actuator command - door reports closed when motor commanded open, or vice versa.
Common causes
- high
Sensor signal offset against actual position
One of the most commonly reported causes for this code — check this first.
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 P04DC mean?
P04DC means "Fuel Fill Door Position Sensor Circuit Range or Performance". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P04DC?
sensor signal offset against actual position — 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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