OBD-II code · Powertrain (generic, extended)
P25D9 Fuel Level Sensor C Circuit Low
The third fuel level sensor signal is below the lower diagnostic threshold. Usually a shorted sender or a short to ground in the harness.
Is it safe to drive with P25D9?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInternal short in the sender resistor
- PossibleSignal wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.8–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Fuel Level Sensor C, Wiring Harness
Related codes
- P0462Fuel Level Sensor A Circuit Low
- P2067Fuel Level Sensor B Circuit Low
- P25D6Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Stop Performance
- P25D7Fuel Level Sensor C Circuit
- P25D8Fuel Level Sensor C Performance
- P25DAFuel Level Sensor C Circuit High
- P25DBFuel Level Sensor C Circuit Intermittent
- P25DCFuel Level Sensor C Stuck
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.