B1378 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1378 – Oil Change Lamp Circuit Short To Ground


B1378 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1378 Possible Causes


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


B1378 Description


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