Subaru OBD / OBD2 Codes >> B9 Tribeca 3.0/3.5L – Baja – Forester – Impreza – Legacy/Outback (1995 – 2008)

ModeLYearEngine identificationSystem
B9 Tribeca 3.0/3.5L2006-08VIN  code digit 6 =  8/9MFI/MPI
Baja 2.5L 16V2003-06VIN  code digit 6 =  6
Baja 2.5L Turbo2004-06VIN  code digit 6 =  6
Forester 2.5L 16V1998-07VIN  code digit 6 =  6
Forester 2.5L Turbo2004-07VIN  code digit 6 =  6
Impreza 1.8L1995-97VIN  code digit 6 =  2
Impreza 2.0L Turbo2002-04VIN  code digit 6 =  2
Impreza 2.2L 16V1996-01VIN  code digit 6 =  4
Impreza 2.5L 16V1998-07VIN  code digit 6 =  6
Impreza 2.5L Turbo2004-07VIN  code digit 6 =  7
Legacy 2.2L 16V1995-99VIN  code digit 6 =  4
Legacy/Outback 2.5L  16V1996-07VIN  code digit 6 =  6
Legacy/Outback 2.5L Turbo2005-07VIN  code digit 6 =  6
Legacy/Outback 3.0L2002-08VIN  code digit 6 =  8

General information

  • Engine control module (ECM) incorporates self-diagnosis function.
  • Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to workshop.

Accessing

  • Trouble codes can be displayed by using a Scan Tool connected to the data link connector (DLC):
o lmpreza ->1997/Legacy ->1999/0utback ->1999 [1].
o Forester/lmpreza 1998-01 [2]
o lmpreza 2002->[3]
o Baja/Legacy 2000 ->/Outback 2000->[4]
o B9 Tribeca [5]

Erasing – models ->2002

  • Trouble codes can be erased by using a Scan Tool connected to the data link connector (DLC) or as follows:
  • Ensure ignition switched OFF.
  • Disconnect battery ground cable for 30 seconds minimum.
  • Reconnect battery ground cable.

NOTE: Disconnecting battery ground lead will erase trouble codes but may also erase memory from electronic units such as radio.

Erasing – models 2003->

  • Trouble codes can only be erased by using a Scan Tool connected to the data link connector (DLC).

Trouble code  identification

OBD-11 codeFault locationProbable cause
PO,P2,UORefer to OBD-11 trouble code tables–
P1086Intake manifold air control actuator position sensor, LH – voltage lowWiring, intake manifold air control actuator position sensor, ECM
P1087Intake manifold air control actuator position sensor, LH – voltage highWiring, intake manifold air control actuator position sensor, ECM
P1088Intake manifold air control actuator position sensor, RH – voltage lowWiring, intake manifold air control actuator position sensor, ECM
P1089Intake manifold air control actuator position sensor, RH – voltage highWiring, intake manifold air control actuator position sensor, ECM
P1090Intake manifold air control actuator, RH – stuck openWiring, intake manifold air control actuator position sensor, ECM
P1091Intake manifold air control actuator, RH – stuck closedWiring, intake manifold air control actuator position sensor, ECM
P1092Intake manifold air control actuator, LH – stuck openWiring, intake manifold air control actuator position sensor, ECM
P1093Intake manifold air control actuator, LH – stuck closedWiring, intake manifold air control actuator position sensor, ECM
P1094Intake manifold air control actuator, RH – open circuitWiring, intake manifold air control actuator position sensor, ECM
P1095Intake manifold air control actuator, RH – over currenVshort circuitWiring, intake manifold air control actuator position sensor, ECM
P1096Intake manifold air control actuator, LH – open circuitWiring, intake manifold air control actuator position sensor, ECM
P1097Intake manifold air control actuator, LH – over currenVshort circuitWiring, intake manifold air control actuator position sensor, ECM
P1100Starter signal – circuit malfunctionStarter motor circuit, NPITR switch, CPP   switch, ECM
P1101Neutral position (NP) switch – MT – circuit malfunctionWiring, NP switch, ECM
P1101Park/neutral position (PNP) switch – circuit malfunctionWiring, PNP switch, ECM
P1102MAP/BARO sensor switching valve – circuit malfunctionWiring, MAP/BARO sensor switching valve, ECM
P1103Engine torque control signal 1 – circuit malfunctionWiring, ECM, TCM
P1104Traction control signal – circuit malfunctionWiring, traction control module
P1106Engine torque control signal 2 – circuit malfunctionWiring, ECM, TCM
P1107Secondary air injection (AIR) diagnosis solenoid – circuit malfunctionWiring, AIR diagnosis solenoid, ECM
P1110Barometric pressure (BARO) sensor- voltage lowWiring, BARO sensor, ECM
P1111Barometric pressure (BARO) sensor- voltage highWiring, BARO sensor, ECM
P1112Barometric pressure (BARO) sensor- range/performance problemWiring, BARO sensor, ECM
P1115Engine torque control cut signal – voltage highWiring, ECM, TCM
P1116Engine torque control cut signal – voltage lowWiring, ECM, TCM
P1120Starter signal – voltage highStarter motor circuit, wiring short to positive, ECM
P1121Park/neutral position (PNP) switch/neutral position (NP) switch – voltage lowWiring short to ground, selector cable, PNP   switch, ECM
P1122MAP/BARO sensor switching valve- voltage highWiring open/short to positive, MAP/BARO   sensor switching valve, ECM
P1124Traction control signal – voltage highWiring open/short to positive
P1130Heated oxygen sensor (H02S) 1 -open circuitWiring, H02S, ECM
P1131Heated oxygen sensor (H02S) 1 -short circuitWiring, H02S, ECM
P1132Heated oxygen sensor (H02S) 1 -voltage lowWiring, H025, ECM
P1133Heated oxygen sensor (H02S) 1 – voltage highWiring, H025, ECM
P1134Engine control module (ECM)ECM
P1137Heated oxygen sensor (H02S) 1 – range/performance problemWiring, H025, ECM
P1139Heated oxygen sensor (H02S) 1, heater control – range/performance problemWiring, H02S, ECM
P1140Heated oxygen sensor (H02S) 1, bank 2, heater – range/performance problemWiring, H025, ECM
P1141Mass air flow (MAF) sensor – range/performance problem voltage highMAF sensor
P1142Throttle position (TP) sensor – range/performance problem voltage lowTP sensor
P1143MAP/BARO sensor – range/performance problem voltage lowHose leak/blockage, MAP/BARO sensor, MAP/BARO sensor switching solenoid
P1144Manifold absolute pressure (MAP) sensor/barometric pressure (BARO) sensor- range/performance problem voltage highMAP/BARO sensor
P1146Manifold absolute pressure (MAP) sensor – range/performance problem voltage highWiring, MAP sensor, TP sensor
P1150Heated oxygen sensor (H02S) 1, heater- voltage highWiring, H025, ECM
P1151Heated oxygen sensor (H02S) 2 – voltage highWiring, H02S, ECM
P1152Heated oxygen sensor (H02S) 1, bank 1 – range/performance problem voltage lowWiring, H02S, ECM
P1153Heated oxygen sensor (H02S) 1, bank 1 – range/performance problem voltage highWiring, H025, ECM
P1154Heated oxygen sensor (H02S) 1, bank 2 – range/performance problem voltage lowWiring, H02S, ECM
P1155Heated oxygen sensor (H02S) 1, bank 2 – range/performance problem voltage highWiring, H02S, ECM
P1160Throttle actuator control (TAC) – return spring failureWiring, TAC motor
P1207Injector air control solenoid – voltage lowWiring, injector air control solenoid, ECM
P1208Injector air control solenoid – voltage highWiring, injector air control solenoid, ECM
P1208Knock sensor (KS)- voltage lowWiring, KS, ECM
P1230Fuel pump (FP) control module – circuit malfunctionWiring, FP control module, ECM
P1244Turbocharger (TC) wastegate regulating valve – voltage lowWiring, TC wastegate regulating valve, ECM
P1245Turbocharger (TC) wastegate regulating valve – failsafeWiring, TC wastegate regulating valve, ECM
P1301Exhaust gas temperature sensor – misfire/fire due to increased temperatureRepair other DTC’s, replace pre-CAT
P1312Exhaust gas temperature sensorWiring, exhaust gas temperature sensor
P1325Knock sensor (KS) -voltage lowWiring, KS, ECM
P1400Fuel tank vent valve – circuit malfunction voltage lowWiring open/short to ground, fuel tank vent valve, ECM
P1401Fuel tank pressure control system – malfunctionEVAP system, fuel tank pressure sensor
P1402Fuel level sensor- circuit malfunctionWiring, instrument cluster, fuel level sensor, ECM
P1410Secondary air injection (AIR) solenoid – stuck openWiring, air leaks, AIR solenoid
P1418Secondary air (AIR) system – circuit malfunctionWiring, AIR pump relay, AIR pump, ECM
P1420Fuel tank vent valve -circuit malfunction voltage highWiring open/short to positive, fuel tank vent valve, ECM
P1421Exhaust gas recirculation (EGR) system – voltage highWiring open/short to positive, EGR solenoid, ECM
P1422Evaporative emission (EVAP) canister purge valve – voltage highWiring open/short to positive, EVAP valve, ECM
P1423Evaporative emission (EVAP) canister purge system – vent control voltage highWiring open/short to positive, EVAP vent valve, ECM
P1440Fuel tank pressure control system – voltage lowFuel tank pressure control solenoid, fuel filler cap, EVAP drain/vent valve, EVAP canister/valve, fuel tank, hose/pipe leak
P1441Fuel tank pressure control system – voltage highFuel tank pressure control solenoid, fuel filler cap, EVAP drain/vent valve, EVAP valve, fuel tank, hose/pipe blockage
P1442Fuel level sensor- range/performance problemFuel level sensor
P1443Evaporative emission (EVAP) canister purge valve – vent control malfunctionHose blockage, EVAP canister purge valve
P1445Injector air control solenoid – circuit malfunctionWiring, injector air control solenoid, ECM
P1446Evaporative emission (EVAP) canister purge valve – voltage lowWiring, EVAP canister purge valve, ECM
P1447Evaporative emission (EVAP) canister purge valve – voltage highWiring, EVAP canister purge valve, ECM
P1448Evaporative emission (EVAP) canister purge valve – range/performance problemWiring, EVAP canister purge valve, ECM
P1480Engine coolant blower motor relay 1 – voltage highWiring, blower motor relay, ECM
P1490Thermostat – malfunctionThermostat, cooling system, engine coolant blower motor
P1491Positive crankcase ventilation (PCV) – malfunctionWiring, hose blocked/leaking
P1492Exhaust gas recirculation (EGR) solenoid valve – signal 1 – voltage lowWiring, EGR solenoid valve
P1493Exhaust gas recirculation (EGR) solenoid valve – signal 1 – voltage highWiring, EGR solenoid valve, ECM
P1494Exhaust gas recirculation (EGR) solenoid valve – signal 2 – voltage lowWiring, EGR solenoid valve
P1495Exhaust gas recirculation (EGR) solenoid valve – signal 2 – voltage highWiring, EGR solenoid valve, ECM
P1496Exhaust gas recirculation (EGR) solenoid valve – signal 3 – voltage lowWiring, EGR solenoid valve
P1497Exhaust gas recirculation (EGR) solenoid valve – signal 3 – voltage highWiring, EGR solenoid valve, ECM
P1498Exhaust gas recirculation (EGR) solenoid valve – signal 4 – voltage lowWiring, EGR solenoid valve
P1499Exhaust gas recirculation (EGR) solenoid valve – signal 4 – voltage highWiring, EGR solenoid valve, ECM
P1500Engine coolant blower motor relay 1 – circuit malfunctionWiring, blower motor relay, ECM
P1502Engine coolant blower motor – malfunctionCooling system, radiator ventilation obstructed
P1505Idle air (lAC) control valve – voltage highWiring, lAC valve, ECM
P1507Idle air (lAC) control system – malfunctionIntake system, lAC valve
P1510Idle air (lAC) control valve, circuit 1 – voltage lowWiring, lAC valve, ECM
P1511Idle air (lAC) control valve, circuit 1 – voltage highWiring, lAC valve, ECM
P1512Idle air (lAC) control valve, circuit 2 – voltage lowWiring, lAC valve, ECM
P1513Idle air (lAC) control valve, circuit 2 – voltage highWiring, lAC valve, ECM
P1514Idle air (lAC) control valve, circuit 3 – voltage lowWiring, lAC valve, ECM
P1515Idle air (lAC) control valve, circuit 3 – voltage highWiring, lAC valve, ECM
P1516Idle air (lAC) control valve, circuit 4 – voltage lowWiring, lAC valve, ECM
P1517Idle air (lAC) control valve, circuit 4 – voltage highWiring, lAC valve, ECM
P1518Starter motor switch – circuit malfunctionWiring
P1520Engine coolant blower motor relay 1 – voltage highWiring open/short to positive, blower motor relay, ECM
P1540Vehicle speed sensor (VSS) – malfunction 2Wiring, instrument cluster, VSS, ECM
P1544Exhaust gas temperature sensor – increased temperature detectedRepair other DTC’s, exhaust system, replace pre-CAT
P1560Engine control module (ECM) – battery voltage supplyWiring, fuse, ECM
P1570Immobilizer read coilWiring, immobilizer read coil, immobilizer control module
P1571Engine control module (ECM) – incorrect immobilizer codeImmobilizer code not programmed
P1572Immobilizer control module/ECM – circuit malfunctionWiring, immobilizer control module, ECM
P1574Immobilizer control module – communication errorWiring, key not programmed, immobilizer control module
P1576Engine control module (ECM) – EEPROM   errorECM
P1577Immobilizer control module – EEPROM error. Immobilizer control module
P1578Immobilizer system – incorrect signalIncorrect key has been used
P1590Park neutral position (PNP) switch – voltage highWiring, PNP switch, ECM
P1591Park neutral position (PNP) switch – voltage lowWiring, PNP switch, ECM
P1592Park neutral position (PNP) switch – circuit malfunctionWiring, PNP switch, ECM
P1594Transmission control module (TCM) – communication circuit malfunctionWiring, TCM, ECM
P1595Transmission control module (TCM) – communication circuit voltage lowWiring, TCM, ECM
P1596Transmission control module (TCM) – communication circuit voltage highWiring, TCM, ECM
P1602Engine control module (ECM) – programming errorWiring, other trouble code(s) stored, mechanical fault, incorrect programming, incorrect ECM, ECM
P1698Engine torque control cut signal – voltage lowWiring, ECM, TCM
P1699Engine torque control cut signal – voltage highWiring, ECM, TCM
P1700AT- throttle position (TP) sensor- circuit malfunctionWiring, TP sensor
P1701Cruise control set signal – AT- circuit malfunctionWiring, cruise control switch, TCM
P1702AT diagnosis signal – voltage lowWiring short circuit, TCM
P1703Shift solenoid (SS) low clutch timing – circuit malfunctionWiring, shift solenoid, TCM
P1704Shift solenoid (SS) 2-4 brake timing – circuit malfunctionWiring, shift solenoid, TCM
P1705Shift solenoid (SS) 2-4 brake pressure control – circuit malfunctionWiring, shift solenoid, TCM
P1711Engine torque control signal 1 -circuit malfunctionWiring, ECM, TCM
P1712Engine torque control signal 2 – circuit malfunctionWiring, ECM, TCM
P1722AT diagnosis signal – voltage highWiring short to positive, TCM, ECM
P1742Automatic transmission diagnosis signal – circuit malfunctionWiring, TCM