Power Steering System DTCS

POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC	Item	Content of diagnosis	Note
None	Without DTC	Normal	Refer to WITHOUT DTC , INSPECTION, Subaru Select Monitor.
	"Assist limitation" is displayed in the current data «EPS operating condition».	Assist limitation is performed due to overheat protection control.	Refer to POWER STEERING ASSIST DISABLED , STEERING WARNING LIGHT DOES NOT COME ON, STEERING Warning Light.
	The current data «Overheating protection intervention history» is more than once.	There are previous records of intervention to overheat protection control.	Refer to POWER STEERING ASSIST DISABLED , STEERING WARNING LIGHT DOES NOT COME ON, STEERING Warning Light.
C2511	Torque Sensor Failure 1 (Main)	Poor connector contact Forgot to connect connector Faulty torque sensor section circuit Faulty torque sensor coil	Refer to DTC C2511 TORQUE SENSOR FAILURE 1 (MAIN) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2512	Torque Sensor Failure 2 (Sub)		Refer to DTC C2512 TORQUE SENSOR FAILURE 2 (SUB) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2513	Torque Sensor Failure 3 (Much Tolerance)		Refer to DTC C2513 TORQUE SENSOR FAILURE 3 (MUCH TOLERANCE) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2514	Torque Sensor Power Supply Failure		Refer to DTC C2514 TORQUE SENSOR POWER SUPPLY FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2521	Motor Failure 1 (Motor)	Poor connector contact Forgot to connect connector Harness open/short circuit Motor open circuit Power transistor shorted/open Terminal power supply or ground short	Refer to DTC C2521 MOTOR FAILURE 1 (MOTOR) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2522	Motor Failure 2 (Angle Abnormal)		Refer to DTC C2522 MOTOR FAILURE 2 (ANGLE ABNORMAL) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2531	ECU Failure 1 (CPU Failure)	Faulty main unit of power steering control module	Refer to DTC C2531 ECU FAILURE 1 (CPU FAILURE) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2532	ECU Failure 2 (Peripheral Circuit Failure)	Faulty main unit of power steering control module	Refer to DTC C2532 ECU FAILURE 2 (PERIPHERAL CIRCUIT FAILURE) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2533	ECM Failure 3 (Board Temperature Sensor Failure)	Faulty main unit of power steering control module	Refer to DTC C2533 ECM FAILURE 3 (BOARD TEMPERATURE SENSOR FAILURE) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2541	Vehicle Speed Is Abnormal	Poor connector contact Forgot to connect connector Harness open/short circuit	Refer to DTC C2541 VEHICLE SPEED IS ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2543	Error Passive Status	Defective CAN communication	Refer to DTC C2543 ERROR PASSIVE STATUS , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2551	Power Supply Relay Failure	Power supply voltage malfunction Faulty relay contact	Refer to DTC C2551 POWER SUPPLY RELAY FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
C2552	Motor Relay Abnormal	Faulty relay	Refer to DTC C2552 MOTOR RELAY ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
U0073	Control Module Communication Bus "A" Off	Defective CAN communication	Refer to DTC U0073 CONTROL MODULE COMMUNICATION BUS "A" OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
U0122	Lost Communication With Vehicle Dynamics Control Module	Defective CAN communication	Refer to DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
U0416	Invalid Data Received From Vehicle Dynamics Control Module	Defective CAN communication	Refer to DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
U1120	Lost Communication With Autostart Stop Control Module	Defective CAN communication	Refer to DTC U1120 LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).