OBD-II code · Powertrain (generic)
P04C7 Fuel Fill Door Lock Position Sensor Circuit Intermittent or Erratic
Same as P04C3 with intermittent feedback. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P04C7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent contact at connector
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Fuel Fill Door Lock Position Sensor, Fuel Fill Door Wiring
Related codes
- P04C4Fuel Fill Door Lock Position Sensor Circuit Range or Performance
- P04C5Fuel Fill Door Lock Position Sensor Circuit Low
- P04C6Fuel Fill Door Lock Position Sensor Circuit High
- P04C8Fuel Fill Door Open Request Sensor or Switch Circuit
- P04C9Fuel Fill Door Open Request Performance Stuck Off
- P04CAFuel Fill Door Open Request Sensor or Switch Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.