Fuel Filler Door
The flap covering the filler neck, powered and locked by the vehicle on most modern cars. It is not just trim: it locks with the doors to deter siphoning, stays shut while the vehicle is moving, and on vehicles with a sealed fuel tank it will not open until the tank has been vented so the driver is not met by pressurised vapour.
That last behaviour causes most of the reported faults that are not faults. On a plug-in hybrid or a modern sealed-tank petrol, venting takes several seconds and longer with a full warm tank — a driver who presses the release once and gives up has not waited. And a filler door code alongside evaporative system faults is usually one problem, not two: the tank cannot vent, so the door is correctly refusing to open.
Stuck closed is the failure that strands people, since a car that cannot be refuelled has a finite range. Every vehicle has a manual release — normally a cable, loop or lever inside the boot behind a trim panel — and finding it before it is needed is worth five minutes.
Check the mechanics before the actuator. Ice in the latch, road salt, a bent hinge or a strained cable stop a door working and none of them is a motor fault.
Also known as: fuel flap, filler flap, fuel door, petrol flap, fuel filler flap, gas door
Referenced by 26 codes
Codes involving this component (26)
- P04B6 Fuel Fill Door Stuck Closed Moderate
- P04B5 Fuel Fill Door Stuck Open Low
- P04B7 Fuel Fill Door Position Sensor/Switch Circuit Intermittent/Erratic
- P04B8 Fuel Fill Door Position Sensor/Switch Circuit
- P04B9 Fuel Fill Door Position Sensor/Switch Circuit Low
- P04BA Fuel Fill Door Position Sensor/Switch Circuit High
- P04BB Fuel Fill Door Lock Control Circuit/Open
- P04BC Fuel Fill Door Lock Control Range/Performance
- P04BD Fuel Fill Door Lock Control Circuit Low
- P04BE Fuel Fill Door Lock Control Circuit High
- P04BF Fuel Fill Door Unlock Control Circuit/Open
- P04C0 Fuel Fill Door Unlock Control Range/Performance
- P04C1 Fuel Fill Door Unlock Control Circuit Low
- P04C2 Fuel Fill Door Unlock Control Circuit High
- P04C3 Fuel Fill Door Lock Position Sensor/Switch Circuit
- P04C4 Fuel Fill Door Lock Position Sensor/Switch Circuit Range/Performance
- P04C5 Fuel Fill Door Lock Position Sensor/Switch Circuit Low
- P04C6 Fuel Fill Door Lock Position Sensor/Switch Circuit High
- P04C7 Fuel Fill Door Lock Position Sensor/Switch Circuit Intermittent/Erratic
- P04C8 Fuel Fill Door Open Request Sensor/Switch Circuit
- P04C9 Fuel Fill Door Open Request Sensor/Switch Performance/Stuck Off
- P04CA Fuel Fill Door Open Request Sensor/Switch Circuit Low
- P04CB Fuel Fill Door Open Request Sensor/Switch Circuit High Low
- P04CC Fuel Fill Door Open Request Sensor/Switch Circuit Intermittent/Erratic
- P04CD Fuel Fill Door Open Request Sensor/Switch Stuck On
Other components in Body, Interior and Safety
- Body Control Module 299
- Restraints Control Module 177
- Air Conditioning Control Module 80
- Door Control Module 58
- Seat Belt Pretensioner 55
- Occupant Classification Module 33
- Audio Amplifier 28
- Seat Control Module 28
- Impact Sensor 26
- Steering Column Clockspring 24
- Steering Column Control Module 21
- Stop-Start Switch 20
- Door Switch 17
- Door Window Motor 10
- Air Conditioning Refrigerant Expansion Valve 7
- Instrument Cluster 6
- Moveable Roof Control Module 5
- Mirror Control Module 5
- Pedestrian Alert Module 3
- Front Radar Sensor 3
- Park Assist Module 3
- Remote Function Actuation Module 3
- Automated Driving System Control Module 2
- Seat Control Switch Module 2
- Speech Recognition Module 2
- Folding Top Control Module 1
- Heated Steering Wheel Module 1
- Haptic Control Module 1
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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