OBD
P04B6
Fuel Fill Door Stuck Closed
What it means
P04B6 means Fuel Fill Door Stuck Closed.
Check these first
- A failed fuel filler door actuator motor
- A seized fuel filler door hinge
- Debris jamming the fuel filler door
- A fuel filler door sensor reading closed
What to do next
- Command the fuel filler door open on a scan tool
- Inspect the fuel filler door hinge for seizing
- Clean debris from the fuel filler door
- Replace the actuator motor if the door does not move
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.