B1845 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1845 – Ignition Tamper Circuit Failure


B1845 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1845 Possible Causes


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


B1845 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.