P252B Code: Meaning, Causes, and Symptoms | OBD2 Codes

P252B – Engine Oil Quality Sensor Circuit Range/Performance

 

P252B Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P252B Possible Causes

 

Faulty Engine Oil Quality Sensor,Engine Oil Quality Sensor harness is open or shorted,Engine Oil Quality Sensor circuit poor electrical connection

 

P252B Description

 

The Powertrain Control Module (PCM) monitors the Engine Oil Quality Sensor Circuit. The PCM sets the OBDII code when the Engine Oil Quality Sensor signal is out of factory specifications.