Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Power Steering System DTCS
POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| DTC | Item | Content of diagnosis | Note |
|---|---|---|---|
| None | Without DTC | Normal | <Ref. 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. | <Ref. to POWER STEERING ASSIST DISABLED , STEERING WARNING LIGHT DOES NOT COME ON, STEERING Warning Light.> | |
| "Overheating protection intervention history" in current data display shows 1 or more. | There are previous records of intervention to overheat protection control. | <Ref. to POWER STEERING ASSIST DISABLED , STEERING WARNING LIGHT DOES NOT COME ON, STEERING Warning Light.> | |
| C2511 | Torque Sensor Main |
|
<Ref. to DTC C2511 TORQUE SENSOR MAIN , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2512 | Torque Sensor Sub | <Ref. to DTC C2512 TORQUE SENSOR SUB , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| C2513 | Torque Sensor Much Tolerance | <Ref. to DTC C2513 TORQUE SENSOR MUCH TOLERANCE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| C2514 | Torque Sensor Power Supply | <Ref. to DTC C2514 TORQUE SENSOR POWER SUPPLY , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| C2521 | Motor Malfunction |
|
<Ref. to DTC C2521 MOTOR MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2522 | Resolver Sensor | <Ref. to DTC C2522 RESOLVER SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> | |
| C2531 | Control Module CPU | Faulty main unit of power steering control module | <Ref. to DTC C2531 CONTROL MODULE CPU , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2532 | Control Module Peripheral Circuit | Faulty main unit of power steering control module | <Ref. to DTC C2532 CONTROL MODULE PERIPHERAL CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2533 | Control Module Board Temperature Sensor | Faulty main unit of power steering control module | <Ref. to DTC C2533 CONTROL MODULE BOARD TEMPERATURE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2541 | Vehicle Dynamics Control Module Vehicle Speed Sensor |
|
<Ref. to DTC C2541 VEHICLE DYNAMICS CONTROL MODULE VEHICLE SPEED SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2543 | Error Passive | Defective CAN communication | <Ref. to DTC C2543 ERROR PASSIVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2545 | EyeSight System | EyeSight system failure | <Ref. to DTC C2545 EYESIGHT SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2546 | EyeSight Value | EyeSight system failure | <Ref. to DTC C2546 EYESIGHT VALUE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2547 | EyeSight Check Sum |
|
<Ref. to DTC C2547 EYESIGHT CHECK SUM , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2548 | Vehicle Dynamics Control Module System | VDC system failure | <Ref. to DTC C2548 VEHICLE DYNAMICS CONTROL MODULE SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2549 | Assist MAP Selection |
|
<Ref. to DTC C2549 ASSIST MAP SELECTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| C2551 | Power Supply Relay |
|
<Ref. to DTC C2551 POWER SUPPLY RELAY , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0073 | Control Module Communication Bus Off | Defective CAN communication | <Ref. to DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0100 | Lost Communication With ECM/PCM "A" | Defective CAN communication | <Ref. to DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0122 | Lost Communication With Vehicle Dynamics Control Module | Defective CAN communication | <Ref. to DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0126 | Lost Communication With Steering Angle Sensor Module | Defective CAN communication | <Ref. to DTC U0126 LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0155 | Lost Communication With Instrument Panel Cluster (IPC) Control Module | Defective CAN communication | <Ref. to DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0401 | Invalid Data Received From ECM/PCM "A" | Defective CAN communication | <Ref. to DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U0416 | Invalid Data Received From Vehicle Dynamics Control Module | Defective CAN communication | <Ref. to DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U1235 | Lost Communication With EyeSight | Defective CAN communication | <Ref. to DTC U1235 LOST COMMUNICATION WITH EYESIGHT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
| U1433 | Invalid Data Received From EyeSight | Defective CAN communication | <Ref. to DTC U1433 INVALID DATA RECEIVED FROM EYESIGHT , Diagnostic Procedure with Diagnostic Trouble Code (DTC).> |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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