What does code P25B1 mean?

Q: What does code P25B1 mean?

Fuel Level Sensor B Stuck. P25B1 indicates that the powertrain control module has detected a stuck condition in fuel level sensor B, meaning the sensor's output voltage has stopped changing over a defined period despite expected fuel movement. The computer compares fuel level readings against other inputs and flags the sensor as stuck when the signal remains static during conditions that should produce a change.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25B1

P25B1Fuel Level Sensor B Stuck

P25B1 indicates that the powertrain control module has detected a stuck condition in fuel level sensor B, meaning the sensor's output voltage has stopped changing over a defined period despite expected fuel movement. The computer compares fuel level readings against other inputs and flags the sensor as stuck when the signal remains static during conditions that should produce a change.

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.