C1551 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1551 – Power Supply Voltage Malfunction


C1551 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light),Engine Crank and No Start,Security Immobiliser Warning Lights ON


C1551 Possible Causes


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


C1551 Description


The Power Steering ECU monitors itself for the proper operation. The Power Steering ECU sets the OBDII code when it detects an internal malfunction. The Power Steering ECU distinguishes the ignition switch status as ON or OFF through the IG power source circuit.