P25DC
Fuel Level Sensor C Stuck
The third fuel level sensor reads a constant value across known consumption or refuelling events. Float arm or resistor wiper is mechanically stuck.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Float arm jammed against tank wall, baffle or pump moduleCommon
- Resistor wiper seized by varnish from old fuelPossible
Parts involved
- Fuel Level Sensor C
- Fuel Tank
P25DC is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.