B1399 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1399 – Personalised Key Synchronisation System Programming Failure


B1399 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1399 Possible Causes


Passive Anti-Theft System (PATS) key not programmed,Faulty Body Control Module (BCM)


B1399 Description


When the Body Control Module (BCM) enters a key programming state, it activates the transceiver to read the key in the ignition key cylinder. If a valid Passive Anti-Theft System (PATS) key is used and there are no concerns with PATS, the key is programmed into the BCM memory. The OBDII code sets when there is an unprogrammed PATS key