OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P04B5?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyHinge jammed by ice, dirt or debris
- PossibleActuator linkage or motor broken
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.2 h
- Emissions test
- Usually unaffected
- Parts involved
- Fuel Fill Door, Fuel Fill Door Actuator
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.