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Subaru OBD-II Trouble Codes (1996 & newer models)

See also: Generic OBD Codes - Other Subaru OBD Codes

Note: See this page for generic OBD codes (they start with P0XXX).

Subaru Specific Codes OBD-II OBD2 (1996 & newer)

CodeDescription
P1086Tumble generator valve #2 (LH) position sensor circuit low input
P1087Tumble generator valve #2 (LH) position sensor circuit high input
P1088Tumble generator valve #1 (RH) position sensor circuit low input
P1089Tumble generator valve #1 (RH) position sensor circuit high input
P1090Tumble generator valve #1 (RH) malfunction (stuck open)
P1091Tumble generator valve #1 (RH) malfunction (stuck close)
P1092Tumble generator valve #2 (LH) malfunction (stuck open)
P1093Tumble generator valve #2 (LH) malfunction (stuck close)
P1094Tumble generator valve circuit #1 (open circuit)
P1095Tumble generator valve circuit #1 (over current)
P1096Tumble generator valve circuit #2 (open circuit)
P1097Tumble generator valve circuit #2 (over current)
P1100Starter Switch Circuit Malfunction
P1101Neutral Position Switch Circuit High Input (A/T)
P1101Neutral Position Switch Circuit Malfunction (M/T)
P1102Pressure Sources Solenoid Valve Circuit Malfunction
P1103Pressure Sources Switching Solenoid Valve Circuit
P1104Engine Torque Control Signal Circuit Malfunction
P1106Engine Torque Control Signal 2 Circuit Malfunction
P1110Atmospheric pressure sensor low input
P1111Atmospheric pressure sensor high input
P1112Atmospheric pressure sensor range/performance problem
P1115Engine Torque Control Cut Signal Circuit High Input
P1116Engine Torque Control Cut Signal Circuit Low Input
P1120Starter Switch High Input
P1121Neutral Position Switch Circuit High Input [MT Vehicles]
P1121Neutral Position Switch Circuit Low Input [AT Vehicles]
P1122Pressure Sources Switching Valve Circuit High Input
P1124TCS Signal Circuit High Input
P1130Front oxygen sensor circuit malfunction (open circuit)
P1131Front oxygen sensor circuit malfunction (short circuit)
P1134Front oxygen (A/F) sensor microcomputer problem
P1137Front oxygen (A/F) sensor circuit range/performance problem
P1139Front oxygen (A/F) sensor #1 heater circuit performance/range problem
P1141Mass Air Flow Sensor Circuit High Input
P1142Mass Air Flow Sensor Circuit Low Input
P1143Pressure Sensor Circuit Low Input
P1144Pressure Sensor Circuit High Input
P1146Pressure sensor circuit range/performance problem (high input)
P1150Front Oxygen Sensor Heater Circuit High Input
P1151Rear Oxygen Sensor Heater Circuit High Input
P1230Fuel pump control unit malfunction
P1244Wastegate control solenoid valve malfunction (low input)
P1245Wastegate control solenoid valve malfunction (fail-safe)
P1301Fire due to increased exhaust temperature
P1312Exhaust temperature sensor malfunction
P1325Knock Sensor Circuit Low Input
P1400Fuel Tank Pressure Control Solenoid Low Input
P1420Fuel Tank Pressure Control Solenoid High Input
P1421Exhaust Gas Recirculation Circuit High Input
P1422EVAP Purge Control Valve Circuit High Input
P1423EVAP Vent Control High Input
P1440Fuel Tank Pressure Control System Low Input
P1441Fuel Tank Pressure Control System High Input
P1442Fuel Level Sensor Circuit Range/Perf
P1443EVAP Control System Vent Control Function Problem
P1480Cooling fan relay 1 circuit high input
P1500Radiator Fan Relay 1 Circuit Malfunction
P1501Idle Control System Malfunction (Fail Safe)
P1502Radiator Fan Function Problem
P1507Idle Control System Malfunction (Fail Safe)
P1510Idle Air Control Solenoid Signal 1 Circuit Low Input
P1511Idle Air Control Solenoid Signal 1 Circuit High Input
P1512Idle Air Control Solenoid Signal 2 Circuit Low Input
P1513Idle Air Control Solenoid Signal 2 Circuit High Input
P1514Idle Air Control Solenoid Signal 3 Circuit Low Input
P1515Idle Air Control Solenoid Signal 3 Circuit High Input
P1516Idle Air Control Solenoid Signal 4 Circuit Low Input
P1517Idle Air Control Solenoid Signal 4 Circuit High Input
P1518Starter switch circuit low input
P1520Radiator Fan Relay 1 Circuit High Input
P1540Vehicle Speed Sensor Malfunction 2
P1544High exhaust temperature detected
P1560Back-Up Voltage Circuit Malfunction
P1590Neutral position switch circuit high input
P1591Neutral position switch circuit low input
P1592Neutral position switch circuit (MT model)
P1594Automatic transmission diagnosis input signal circuit malfunction
P1595Automatic transmission diagnosis input signal circuit low input
P1596Automatic transmission diagnosis input signal circuit high input
P1698Engine torque control cut signal circuit low input
P1699Engine torque control cut signal circuit high input
P1700Throttle Position Sensor Circuit Malfunction (A/T)
P1701Cruise Control Set Signal Circuit Malfunction (A/T)
P1702Auto Trans Diagnosis Input Signal Circuit
P1703Low clutch timing control solenoid valve circuit malfunction
P17042-4 Brake Timing Solenoid Valve Circuit Malfunction
P17052-4 Brake Pressure Solenoid Valve (Solenoid D) Circuit
P1711Engine torque control signal 1 circuit malfunction
P1712Engine torque control signal 2 circuit malfunction
P1722Auto Trans Diagnosis Input Signal High Input
P1742Auto Trans Diagnosis Input Signal Malfunction

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