C15C8 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C15C8 – Power Supply Relay Failure


C15C8 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C15C8 Possible Causes


Faulty Steering Control ECU,Steering Control ECU harness is open or shorted,Steering Control ECU circuit poor electrical connection


C15C8 Description


The Steering Control ECU monitors PIG (motor power source voltage) and detects a malfunction in the power supply relay (located inside the steering control ECU). If the Steering Control ECU detects a malfunction, it will turn on the master warning light, store the Diagnostic Trouble Code (DTC), and stop Variable Gear Ratio Steering (VGRS) operation.