B1A3E Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1A3E – Siren/ITM Mismatch

 

B1A3E Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1A3E Possible Causes

 

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

 

B1A3E Description

 

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