C2304 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C2304 – Open Or Short Circuit In U Phase


C2304 Possible Symptoms


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


C2304 Possible Causes


Faulty Auxiliary Battery,Faulty Transmission Control ECU Assembly,Faulty Shift Control Actuator,Shift Control Actuator harness is open or shorted,Shift Control Actuator circuit poor electrical connection


C2304 Description


The Shift Control Actuator consists of the parking lock motor and the rotation angle sensor. The Transmission Control ECU receives a P position switch signal from the Power Management Control ECU (HV CPU) and activates the parking lock motor by controlling current, causing the parking lock mechanism to switch. The Transmission Control ECU outputs these DTCs when it detects a malfunction in the parking lock motor system.