C0393 Code: Meaning, Causes, and Symptoms | OBD2 Codes
C0393 – Rear Axle Coupling Solenoid Control Circuit
C0393 Possible Symptoms
Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)
C0393 Possible Causes
Faulty Rear Axle Coupling Solenoid,Rear Axle Coupling Solenoid harness is open or shorted,Rear Axle Coupling Solenoid circuit poor electrical connection
The rear differential Clutch Control Module (CCM) provides a power and ground switching circuits to the solenoid. The solenoid receives current from the CCM through PWM low side driver, and converts that signal into torque through the clutch to the rear tyres when all wheel drive (AWD) is requested.