B1249 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1249 – Double Locking ECU Communication Stop


B1249 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1249 Possible Causes


Faulty Double Lock Door Control Relay,Double Lock Door Control Relay harness is open or shorted,Double Lock Door Control Relay circuit poor electrical connection,Faulty Main Body ECU


B1249 Description


The Diagnostic Trouble Code (DTC) B1249 is stored when communication between the Double Lock Door Control Relay and Main Body ECU stops for more than 10 seconds.