C1623 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1623 – Brake Controlled System Malfunction


C1623 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1623 Possible Causes


Faulty All Wheel Control (AWC) ECU,All Wheel Control (AWC) ECU harness is open or shorted,All Wheel Control (AWC) ECU circuit poor electrical connection


C1623 Description


The All Wheel Control (AWC) ECU controls brakes for Active Center Differential (ACD) Control. The code is set when the AYC brake control operates for a prolonged period.