C1621 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C1621 – 4-Wheel Active Steer Front Actuator
C1621 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C1621 Possible Causes
Faulty 4-Wheel Active Steer Front Actuator,4-Wheel Active Steer Front Actuator harness is open or shorted,4-Wheel Active Steer Front Actuator circuit poor electrical connection
4-Wheel Active Steer (4WAS) front actuator mainly consists of five components. 4WAS front lock solenoid valve (lock structure), front wheel steering angle sensor, 4WAS front motor, gear shaft, and spiral cable.