B1846 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1846 – Ignition Tamper Circuit Open


B1846 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1846 Possible Causes


Faulty Ignition Switch,Ignition Switch harness is open or shorted,Ignition Switch circuit poor electrical connection,Faulty Body Control Module (BCM)


B1846 Description


The Body Control Module (BCM) monitors the Ignition Switch. The BCM sets the OBDII code when the Ignition Switch is not to factory specifications.