B1345 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1345 – Heated Backlite Input Circuit Short to Ground


B1345 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1345 Possible Causes


Faulty Heated Rear Window Relay,Faulty Heated Rear Window Switch,Faulty Heated Rear Window Grid,Faulty Smart Junction Box (SJB)


B1345 Description


When the rear defrosts switch on the climate control assembly is pressed, a ground signal is sent to the Smart Junction Box (SJB) on the circuit. The SJB then grounds circuit. This energizes the heated rear window relay, allowing voltage to be supplied to the heated rear window grid through the circuit. The OBDII code sets when the Heated Backlite Input is not to factory specifications.