C15A1 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C15A1 – Steering Actuator Malfunction
C15A1 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C15A1 Possible Causes
Faulty Steering Actuator,Steering Actuator harness is open or shorted,Steering Actuator circuit poor electrical connection,Faulty Steering Control ECU
The Steering Control ECU drives the actuator while the steering wheel is turned to set the gear ratio. It detects the current flowing into the actuator motor driving circuit. If the Steering Control ECU detects excessive current, it will store the Diagnostic Trouble Code (DTC) C15A1, turn on the master warning light, and stop Variable Gear Ratio Steering (VGRS).