B1A3F Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1A3F – ITM Arming Sequence Performance

 

B1A3F Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1A3F Possible Causes

 

Faulty Intrusion Transceiver Module (ITM),Intrusion Transceiver Module (ITM) harness is open or shorted,Intrusion Transceiver Module (ITM) circuit poor electrical connection

 

B1A3F Description

 

The OBDII codes set when the Intrusion Transceiver Module (ITM) loses battery voltage.