OBD-II code · Powertrain (generic)
P04C3 Fuel Fill Door Lock Position Sensor Circuit
A general circuit fault is detected on the fuel fill door lock position sensor or switch. Without it the ECU cannot determine whether the lock has actually engaged or released.
Is it safe to drive with P04C3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor circuit
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
Related codes
- P04C0Fuel Fill Door Unlock Control Range or Performance
- P04C1Fuel Fill Door Unlock Control Circuit Low
- P04C2Fuel Fill Door Unlock Control Circuit High
- 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
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.