P04BB
Fuel Fill Door Lock Control Circuit/Open
Generic OBD-II
Common symptoms
What you'll notice
- Check for any loose or damaged wiring connections related to the fuel fill door lock control circuit
- Inspect and replace the fuel fill door lock actuator if necessary
- Verify and repair any faults in the fuel fill door lock control circuit, such as a blown fuse or a faulty relay
- Test and replace the fuel fill door lock switch if it is found to be faulty
Common causes
Most likely first
- Faulty fuel fill door lock solenoid
- Broken or disconnected wiring in the fuel fill door lock circuit
- Faulty fuel fill door lock switch
- Faulty fuel fill door lock control module
- Corroded or dirty electrical connections in the fuel fill door lock circuit
How to diagnose & fix
Work through it in order
- Fuel fill door cannot be locked
- Fuel fill door cannot be opened
- Fuel fill door lock is engaged but does not hold the door closed securely
- Fuel fill door lock mechanism makes a noise or a clicking sound
- Fuel fill door lock indicator light stays on or flashes.
Read & clear P04BB yourself
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