What does code P252C mean?

Q: What does code P252C mean?

Engine Oil Quality Sensor Circuit Low. P252C indicates that the engine control module (ECM) has detected an abnormally low voltage signal on the engine oil quality sensor circuit, which typically means the sensor is reporting oil condition data outside the expected range. The ECM sets this code when the signal wire voltage falls below the manufacturer's specified threshold for a calibrated time, indicating a short to ground, an open circuit, or a failed sensor.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P252C

P252CEngine Oil Quality Sensor Circuit Low

P252C indicates that the engine control module (ECM) has detected an abnormally low voltage signal on the engine oil quality sensor circuit, which typically means the sensor is reporting oil condition data outside the expected range. The ECM sets this code when the signal wire voltage falls below the manufacturer's specified threshold for a calibrated time, indicating a short to ground, an open circuit, or a failed sensor.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

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.