B1B57 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1B57 – 1st Row Passenger Seat Belt Sensor Circuit Shorted Together


B1B57 Possible Symptoms


Air Bag Warning Light ON


B1B57 Possible Causes


Faulty Passenger Seat Belt Buckle Switch,Passenger Seat Belt Buckle Switch harness is open or shorted,Passenger Seat Belt Buckle Switch circuit poor electrical connection,Faulty Occupant Restraint Controller (ORC)


B1B57 Description


When powered, the Occupant Restraint Controller (ORC) sends a test current across the Passenger Seat Belt Buckle Switch circuits every 100 ms to verify the integrity of the switch and wiring. The front seat belt switches cannot be adjusted or repaired and, if ineffective or damaged, the entire front seat belt buckle-half unit must be replaced. The airbag warning lamp will display in the instrument cluster for this fault. The ORC monitors the status of the seat belt switch circuits at power up and every 100ms thereafter while the ignition is in on.