2016 Subaru Legacy 2.5iFACTORY OEM SERVICE PROCEDURE

Vehicle Dynamic Control (VDC) DTCS

VEHICLE DYNAMIC CONTROL (VDC) DIAGNOSTIC TROUBLE CODES (DTC) LIST

DTC Item Description
C1211 FRONT RIGHT ABS SENSOR CIRCUIT < Ref. to DTC C1211 FRONT RIGHT ABS SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1212 FRONT RIGHT ABS SENSOR SIGNAL < Ref. to DTC C1212 FRONT RIGHT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1221 FRONT LEFT ABS SENSOR CIRCUIT < Ref. to DTC C1221 FRONT LEFT ABS SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1222 FRONT LEFT ABS SENSOR SIGNAL < Ref. to DTC C1222 FRONT LEFT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1231 REAR RIGHT ABS SENSOR CIRCUIT < Ref. to DTC C1231 REAR RIGHT ABS SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1232 REAR RIGHT ABS SENSOR SIGNAL < Ref. to DTC C1232 REAR RIGHT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1241 REAR LEFT ABS SENSOR CIRCUIT < Ref. to DTC C1241 REAR LEFT ABS SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1242 REAR LEFT ABS SENSOR SIGNAL < Ref. to DTC C1242 REAR LEFT ABS SENSOR SIGNAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1311 FR HOLD VALVE < Ref. to DTC C1311 FR HOLD VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1312 FR PRESSURE REDUCING VALVE < Ref. to DTC C1312 FR PRESSURE REDUCING VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1321 FL HOLD VALVE < Ref. to DTC C1321 FL HOLD VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1322 FL PRESSURE REDUCING VALVE < Ref. to DTC C1322 FL PRESSURE REDUCING VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1331 RR HOLD VALVE < Ref. to DTC C1331 RR HOLD VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1332 RR PRESSURE REDUCING VALVE < Ref. to DTC C1332 RR PRESSURE REDUCING VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1341 RL HOLD VALVE < Ref. to DTC C1341 RL HOLD VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1342 RL PRESSURE REDUCING VALVE < Ref. to DTC C1342 RL PRESSURE REDUCING VALVE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1351 NORMAL OPENING VALVE 1 < Ref. to DTC C1351 NORMAL OPENING VALVE 1 , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1352 NORMAL OPENING VALVE 2 < Ref. to DTC C1352 NORMAL OPENING VALVE 2 , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1361 NORMAL CLOSING VALVE 1 < Ref. to DTC C1361 NORMAL CLOSING VALVE 1 , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1362 NORMAL CLOSING VALVE 2 < Ref. to DTC C1362 NORMAL CLOSING VALVE 2 , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1411 ELECTRICAL CONTROL MODULE < Ref. to DTC C1411 ELECTRICAL CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1412 SELECTED PARAMETER < Ref. to DTC C1412 SELECTED PARAMETER , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1413 POWER SUPPLY VOLTAGE < Ref. to DTC C1413 POWER SUPPLY VOLTAGE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1422 VDC INTERRUPTION FOR ENGINE CONVENIENCE < Ref. to DTC C1422 VDC INTERRUPTION FOR ENGINE CONVENIENCE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1423 DIFFERENT ECU SPECIFICATIONS < Ref. to DTC C1423 DIFFERENT ECU SPECIFICATIONS , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1424 ECM < Ref. to DTC C1424 ECM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1431 AT < Ref. to DTC C1431 AT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1511 VALVE RELAY < Ref. to DTC C1511 VALVE RELAY , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1521 MOTOR RELAY < Ref. to DTC C1521 MOTOR RELAY , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1531 BLS OFF STUCK < Ref. to DTC C1531 BLS OFF STUCK , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1532 BLS ON STUCK < Ref. to DTC C1532 BLS ON STUCK , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1571 BRAKE LAMP RELAY OFF STUCK < Ref. to DTC C1571 BRAKE LAMP RELAY OFF STUCK , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1711 STEERING ANGLE SENSOR < Ref. to DTC C1711 STEERING ANGLE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1721 YAW RATE SENSOR < Ref. to DTC C1721 YAW RATE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1732 LATERAL G SENSOR < Ref. to DTC C1732 LATERAL G SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1733 LONGITUDINAL G SENSOR < Ref. to DTC C1733 LONGITUDINAL G SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1741 PRESSURE SENSOR < Ref. to DTC C1741 PRESSURE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1742 WHEEL CYLINDER PRESSURE SENSOR < Ref. to DTC C1742 WHEEL CYLINDER PRESSURE SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1811 SYSTEM < Ref. to DTC C1811 SYSTEM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1921 PARKING POSITION SWITCH CIRCUIT < Ref. to DTC C1921 PARKING POSITION SWITCH CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1922 HILL HOLD SWITCH CIRCUIT < Ref. to DTC C1922 HILL HOLD SWITCH CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1935 IGNITION SWITCH CIRCUIT < Ref. to DTC C1935 IGNITION SWITCH CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1942 POWER SUPPLY VOLTAGE < Ref. to DTC C1942 POWER SUPPLY VOLTAGE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1951 ACTUATOR < Ref. to DTC C1951 ACTUATOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1954 RH ACTUATOR < Ref. to DTC C1954 RH ACTUATOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1955 LH ACTUATOR < Ref. to DTC C1955 LH ACTUATOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1956 RH ACTUATOR CIRCUIT < Ref. to DTC C1956 RH ACTUATOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1957 LH ACTUATOR CIRCUIT < Ref. to DTC C1957 LH ACTUATOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1971 CLUTCH SENSOR < Ref. to DTC C1971 CLUTCH SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1983 HIGH FREQUENCY OPERATION < Ref. to DTC C1983 HIGH FREQUENCY OPERATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1984 BRAKE MAINTENANCE MODE < Ref. to DTC C1984 BRAKE MAINTENANCE MODE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
C1985 FORBIDDEN STATE OF DYNAMIC ACTUATOR OPERATION < Ref. to DTC C1985 FORBIDDEN STATE OF DYNAMIC ACTUATOR OPERATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0073 CAN FAILURE, BUS 'OFF' DETECTION < Ref. to DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0100 LOST COMMUNICATION WITH ECM/PCM "A" < Ref. to DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0101 LOST COMMUNICATION WITH TCM < Ref. to DTC U0101 LOST COMMUNICATION WITH TCM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0126 LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE < Ref. to DTC U0126 LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE < Ref. to DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE < 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" < Ref. to DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0402 INVALID DATA RECEIVED FROM TCM < Ref. to DTC U0402 INVALID DATA RECEIVED FROM TCM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE < Ref. to DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE < Ref. to DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE < Ref. to DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U1235 LOST COMMUNICATION WITH EyeSight < Ref. to DTC U1235 LOST COMMUNICATION WITH EYESIGHT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >
U1433 INVALID DATA RECEIVED FROM EyeSight < 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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