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.