2013 Subaru Forester X, Automatic TransFACTORY OEM SERVICE PROCEDURE

Vehicle Dynamics Control System DTCS

VEHICLE DYNAMICS CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Reference
C0021 Open/high input of front ABS wheel speed sensor RH < Refer to DTC C0021 FRONT RIGHT ABS SENSOR CIRCUIT OPEN OR SHORT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0022 Front ABS wheel speed sensor RH signal malfunction < Refer to DTC C0022 FRONT RIGHT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0023 Open/high input of front ABS wheel speed sensor LH < Refer to DTC C0023 FRONT LEFT ABS SENSOR CIRCUIT OPEN OR SHORT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0024 Front ABS wheel speed sensor LH signal malfunction < Refer to DTC C0024 FRONT LEFT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0025 Open/high input of rear ABS wheel speed sensor RH < Refer to DTC C0025 REAR RIGHT ABS SENSOR CIRCUIT OPEN OR SHORT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0026 Rear ABS wheel speed sensor RH signal malfunction < Refer to DTC C0026 REAR RIGHT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0027 Open/high input of rear ABS wheel speed sensor LH < Refer to DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0028 Rear ABS wheel speed sensor LH signal malfunction < Refer to DTC C0028 REAR LEFT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0029 ABS wheel speed sensor signal malfunction in one of four wheels < Refer to DTC C0029 ANY OF WHEEL SENSORS SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0031 Front inlet solenoid valve RH malfunction in VDCCM&H/U < Refer to DTC C0031 FR HOLD VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0032 Front outlet solenoid valve RH malfunction in VDCCM&H/U < Refer to DTC C0032 FR PRESSURE REDUCING VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0033 Front inlet solenoid valve LH malfunction in VDCCM&H/U < Refer to DTC C0033 FL HOLD VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0034 Front outlet solenoid valve LH malfunction in VDCCM&H/U < Refer to DTC C0034 FL PRESSURE REDUCING VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0035 Rear inlet solenoid valve RH malfunction in VDCCM&H/U < Refer to DTC C0035 RR HOLD VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0036 Rear outlet solenoid valve RH malfunction in VDCCM&H/U < Refer to DTC C0036 RR PRESSURE REDUCING VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0037 Rear inlet solenoid valve LH malfunction in VDCCM&H/U < Refer to DTC C0037 RL HOLD VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0038 Rear outlet solenoid valve LH malfunction in VDCCM&H/U < Refer to DTC C0038 RL PRESSURE REDUCING VALVE MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0039 Solenoid valve malfunction in one of four wheels < Refer to DTC C0039 ANY ONE OF FOUR SOLENOID VALVES , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0041 VDC control module malfunction < Refer to DTC C0041 ECM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
VDC control module parameter selection failure < Refer to DTC C0041 PARAMETER SELECTION ERROR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0042 Power voltage malfunction < Refer to DTC C0042 POWER SUPPLY VOLTAGE FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0044 CAN communication failure of transmission control module < Refer to DTC C0044 TCM COMMUNICATION CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0045 Different VDC control module specification < Refer to DTC C0045 INCORRECT VDC CONTROL MODULE SPECIFICATIONS , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
AT control module malfunction < Refer to DTC C0045 TCM MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0047 Improper CAN communication < Refer to DTC C0047 CAN COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0051 Valve Relay < Refer to DTC C0051 VALVE RELAY , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0052 Motor/motor relay OFF malfunction < Refer to DTC C0052 MOTOR AND MOTOR RELAY OFF FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Motor/motor relay ON malfunction < Refer to DTC C0052 MOTOR AND MOTOR RELAY ON FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Motor < Refer to DTC C0052 MOTOR MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0054 BLS open circuit < Refer to DTC C0054 BLS CIRCUIT OPEN , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
BLS ON malfunction < Refer to DTC C0054 BLS ON MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
BLS OFF Malfunction < Refer to DTC C0054 BLS OFF MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0056 Abnormal longitudinal G sensor output signal < Refer to DTC C0056 G SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0057 CAN communication failure of engine control module < Refer to DTC C0057 ECM COMMUNICATION CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Coordinate control prohibition of engine control module < Refer to DTC C0057 ECM CONTROL SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0061 Secondary cut valve malfunction in VDCCM&H/U < Refer to DTC C0061 NORMAL OPENING VALVE 1 MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0062 Primary cut valve malfunction in VDCCM&H/U < Refer to DTC C0062 NORMAL OPENING VALVE 2 MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0063 Secondary suction valve malfunction in VDCCM&H/U < Refer to DTC C0063 NORMAL CLOSING VALVE 1 MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0064 Primary suction valve malfunction in VDCCM&H/U < Refer to DTC C0064 NORMAL CLOSING VALVE 2 MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0071 Excessive steering angle sensor output offset < Refer to DTC C0071 STEERING ANGLE SENSOR OFFSET IS TOO BIG , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Excessive variation amount of steering angle sensor output < Refer to DTC C0071 CHANGE RANGE OF STEERING ANGLE SENSOR IS TOO BIG , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Steering angle sensor output < Refer to DTC C0071 STEER ANGLE SENSOR OP , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Steering angle sensor power supply malfunction < Refer to DTC C0071 STEERING ANGLE SENSOR MALFUNCTION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0072 Yaw rate sensor output < Refer to DTC C0072 ABNORMAL YAW RATE SENSOR OUTPUT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Yaw rate sensor power supply/output < Refer to DTC C0072 VOLTAGE INPUTTED TO YAW RATE SENSOR EXCEEDS SPECIFICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Excessive variation amount of yaw rate sensor output < Refer to DTC C0072 CHANGE RANGE OF YAW RATE SENSOR SIGNAL IS TOO BIG , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Yaw rate sensor communication < Refer to DTC C0072 YAW RATE SENSOR COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Different yaw rate sensor specification < Refer to DTC C0072 SENSOR TYPE ABNORMAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0073 Excessive amount of lateral G sensor output offset < Refer to DTC C0073 LATERAL G SENSOR OFFSET IS TOO BIG , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Lateral G sensor output < Refer to DTC C0073 ABNORMAL LATERAL G SENSOR OUTPUT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
Excessive lateral G sensor output < Refer to DTC C0073 EXCESSIVE LATERAL G SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0074 Pressure sensor < Refer to DTC C0074 PRESSURE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0075 Abnormal reverse signal < Refer to DTC C0075 REVERSE SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0076 Abnormal clutch signal < Refer to DTC C0076 CLUTCH SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C0081 System malfunction < Refer to DTC C0081 SYSTEM FAILURE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
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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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