B1A12 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B1A12 – Remote Keyless Entry Fob 3 Battery Low
B1A12 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
B1A12 Possible Causes
Low Keyless Entry Fob (RKE) Transmitter Battery,Faulty Keyless Entry Fob (RKE) Transmitter,Faulty Totally Integrated Power Module (TIPM)
The Totally Integrated Power Module (TIPM) monitors the Remote Keyless Entry (RKE) Fob. The TIPM sets the OBDII code when the Wireless Ignition Node (WIN) senses that the RKE transmitter signal is not as strong as it ought to be.