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

 

C1621 Description

 

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.