What does code P25DB mean?

Q: What does code P25DB mean?

Fuel Level Sensor C Circuit Intermittent. P25DB means the powertrain control module (PCM) has detected an intermittent fault in the electrical circuit for Fuel Level Sensor C, which is typically the secondary or auxiliary fuel level sender in a dual-tank or multi-sender system. The PCM monitors the sensor signal voltage and flags this code when the reading momentarily drops out, spikes, or becomes erratic beyond a calibrated threshold, rather than failing completely.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25DB

P25DBFuel Level Sensor C Circuit Intermittent

P25DB means the powertrain control module (PCM) has detected an intermittent fault in the electrical circuit for Fuel Level Sensor C, which is typically the secondary or auxiliary fuel level sender in a dual-tank or multi-sender system. The PCM monitors the sensor signal voltage and flags this code when the reading momentarily drops out, spikes, or becomes erratic beyond a calibrated threshold, rather than failing completely.

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.