What does code P25D9 mean?

Q: What does code P25D9 mean?

Fuel Level Sensor C Circuit Low. P25D9 indicates that the powertrain control module (PCM) has detected a low voltage condition on the fuel level sensor C circuit, which is part of the fuel level sending unit inside the fuel tank. The PCM expects a voltage signal that varies with fuel level, and a sustained low reading tells the computer that the circuit is shorted to ground or that the sensor's resistance has dropped below the normal range.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25D9

P25D9Fuel Level Sensor C Circuit Low

P25D9 indicates that the powertrain control module (PCM) has detected a low voltage condition on the fuel level sensor C circuit, which is part of the fuel level sending unit inside the fuel tank. The PCM expects a voltage signal that varies with fuel level, and a sustained low reading tells the computer that the circuit is shorted to ground or that the sensor's resistance has dropped below the normal range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.