B1678 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1678 – Alarm Panic Input Circuit Open


B1678 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1678 Possible Causes


Faulty Alarm Panic Input Sensor,Alarm Panic Input Sensor harness is open or shorted,Alarm Panic Input Sensor circuit poor electrical connection,Faulty Body Control Module (BCM)


B1678 Description


The Body Control Module (BCM) monitors the Alarm Panic Input Sensor. The BCM sets the OBDII code when the Alarm Panic Input Sensor is not to factory specifications.