B1A7F Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1A7F – Electronic Steering Column Lock Communication Performance


B1A7F Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1A7F Possible Causes


Faulty Ignition Key-In,Ignition Key-In harness is open or shorted,Ignition Key-In circuit poor electrical connection,Faulty Steering Column Lock Module (ELV),Faulty Radio Frequency Hub (RF-Hub)


B1A7F Description


This Type 1 code is an authorization failure. It will set during a lock or unlock command. It can set if either a Radio Frequency Hub (RF-Hub) or a Steering Column Lock Module (ELV) was replaced but they are not a pair. It can also set if one of the wires were shorted or cut.