B1428 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1428 – Ignition Switched Power Run/Crank Relay Circuit


B1428 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B1428 Possible Causes


Faulty Ignition Switched Power Run/Crank Relay,Ignition Switched Power Run/Crank Relay harness is open or shorted,Ignition Switched Power Run/Crank Relay circuit poor electrical connection,Faulty Body Control Module (BCM)


B1428 Description


The Body Control Module (BCM) controls the Run/Crank relay through the run/crank relay coil control circuit by applying voltage to the circuit. The Run/Crank relay is energized when the ignition switch is in ON or START, or when a remote start is requested. The OBDII codes set when the BCM detects a short to ground in the run/crank relay coil control circuit.