B1389 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1389 – Oil Temperature Sensor Circuit Failure


B1389 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1389 Possible Causes


Faulty Oil Temperature Sensor,Oil Temperature Sensor harness is open or shorted,Oil Temperature Sensor circuit poor electrical connection,Faulty Powertrain Control Module (PCM)


B1389 Description


The Powertrain Control Module (PCM) monitors the Oil Temperature Sensor. The PCM sets the OBDII code when the Oil Temperature Sensor is not to factory specifications.