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Forester OBD2 Fault Codes


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#1 Jim

Jim

Posted 13 September 2013 - 09:04 PM

Subaru OBD2 Codes

P0031

Front oxygen (A/F) sensor heater circuit low input

P0032

Front oxygen (A/F) sensor heater circuit high input

P0037

Rear oxygen sensor heater circuit malfunction

P0038

Rear oxygen sensor heater circuit high input

P0065

Air assist injector solenoid valve malfunction

P0066

Air assist injector solenoid valve circuit low input

P0067

Air assist injector solenoid valve circuit high input

P0100

Mass Air Flow Sensor Circuit Malfunction

P0101

Mass Air Flow Sensor Circuit Range Problem

P0102

Mass Air Flow Sensor Circuit Low Input

PO103

Mass Air Flow Sensor Circuit High Input

P0105

Pressure Sensor Circuit Malfunction

P0106

Pressure Sensor Circuit Range Problem

PO107

Pressure Sensor Circuit Low Input

PO108

Pressure Sensor Circuit High Input

P0111

Intake air temperature sensor circuit range/performance problem

P0112

Intake air temperature sensor circuit low input

P0113

Intake air temperature sensor circuit high input

P0115

Engine Coolant Temperature Sensor Circuit

P0116

Engine Coolant Temp Sensor Circuit Low Input

PO117

Engine Coolant Temp Sensor Circuit Low Input

PO118

Engine Coolant Temp Sensor Circuit High Input

P0120

Throttle Position Sensor Circuit Malfunction

P0121

Throttle Position Sensor Circuit Range Problem

PO122

Throttle Position Sensor Circuit Range Problem

PO123

Throttle Position Sensor Circuit High Input

P0125

Insufficient Coolant Temperature for Closed Loop

P0128

Thermostat malfunction

P0130

Front Oxygen Sensor Circuit Malfunction

P0131

Front oxygen (A/F) sensor circuit range/performance problem (low input)

P0132

Front oxygen (A/F) sensor circuit range/performance problem (high input)

P0133

Front Oxygen Sensor Circuit Slow Response

P0135

Front Oxygen Sensor Heater Circuit Malfunction

P0136

Rear Oxygen Sensor Circuit Malfunction

P0139

Rear Oxygen Sensor Circuit Slow Response

P0141

Rear Oxygen Sensor Heater Circuit Malfunction

P0170

Fuel Trim Malfunction

P0171

Fuel trim malfunction (A/F too lean)

P0172

Fuel trim malfunction (A/F too rich)

PO181

Fuel Temperature Sensor A Range Problem

PO182

Fuel Temperature Sensor A Circuit Low Input

PO183

Fuel Temperature Sensor A Circuit High Input

P0201

Fuel Injector Circuit Malfunction – #1

P0202

Fuel Injector Circuit Malfunction – #2

P0203

Fuel Injector Circuit Malfunction – #3

P0204

Fuel Injector Circuit Malfunction – #4

P0244

Wastegate control solenoid valve malfunction (high input)

P0245

Wastegate control solenoid valve circuit low input

P0246

Wastegate control solenoid valve circuit high input

PO261

Fuel Injector Circuit Low Input – #1

PO262

Fuel Injector Circuit High Input – #1

PO264

Fuel Injector Circuit Low Input – #2

PO265

Fuel Injector Circuit High Input – #2

PO267

Fuel Injector Circuit Low Input – #3

PO268

Fuel Injector Circuit High Input – #3

PO270

Fuel Injector Circuit Low Input – #4

PO271

Fuel Injector Circuit High Input – #4

P0301

Cylinder 1 Misfire Detected

P0302

Cylinder 2 Misfire Detected

P0303

Cylinder 3 Misfire Detected

P0304

Cylinder 4 Misfire Detected

P0325

Knock Sensor Circuit Malfunction

P0327

Knock sensor circuit low input

P0328

Knock sensor circuit high input

P0335

Crankshaft Position Sensor Circuit Malfunction

PO336

Crankshaft Position Sensor Circuit Range Problem

P0340

Camshaft Position Sensor Circuit Malfunction

PO341

Camshaft Position Sensor Circuit Range Problem

P0400

Exhaust Gas Recirculation Flow Malfunction

P0403

Exhaust Gas Recirculation Circuit Malfunction

PO420

Catalyst System Efficiency Below Threshold

PO440

Evaporative Emission Control System Malfunction

P0441

Evap System Incorrect Purge Flow

P0442

Evaporative emission control system malfunction

P0443

Evap System Purge Control Valve Circuit

PO443

EVAP System Purge Control Valve Circuit Low Input

P0444

Evaporative emission control system purge control valve circuit low input

P0445

Evaporative emission control system purge control valve circuit high input

PO446

EVAP System Vent Control Low Input

P0447

Evaporative emission control system vent control low input

P0448

Evaporative emission control system vent control high input

PO451

EVAP Pressure Sensor Range Problem

PO452

EVAP Pressure Sensor Low Input

PO453

EVAP Pressure Sensor High Input

P0456

Evaporative emission control system malfunction

PO461

Fuel Level Sensor Circuit Range/Performance Problem

PO462

Fuel Level Sensor Circuit Low Input

PO463

Fuel Level Sensor Circuit High Input

P0464

Fuel level sensor intermittent input

P0480

Cooling Fan Relay 1 Circuit Low Input

P0483

Cooling Fan Function Problem

P0500

Vehicle Speed Sensor Malfunction

P0505

Idle Control System Malfunction

P0506

Idle Control System RPM Lower Than Expected

P0507

Idle Control System RPM Higher Than Expected

P0509

Idle control system circuit high input

P0512

Starter switch circuit high input

P0545

Exhaust gas temperature sensor circuit low input

P0546

Exhaust gas temperature sensor circuit high input

P0600

Serial Communication Link Malfunction

P0601

Internal Control Module Memory Checksum Error

P0604

Internal control module memory check sum error

P0703

Brake Switch Input Malfunction

P0705

Transmission Range Sensor Circuit Malfunction

P0710

Transmission Fluid Temperature Sensor Circuit

P0715

Torque Converter Turbine Speed Sensor Circuit Malfunction

P0720

Output Speed Sensor Circuit Malfunction

P0725

Engine Speed Input Circuit Malfunction

P0731

Gear 1 Incorrect Ratio

P0732

Gear 2 Incorrect Ratio

P0733

Gear 3 Incorrect Ratio

P0734

Gear 4 Incorrect Ratio

P0740

Torque Converter Clutch System Malfunction

P0741

Torque converter clutch system malfunction

P0743

Torque Converter Clutch System Electrical

P0748

Pressure Control Solenoid Electrical

P0753

Shift Solenoid A Electrical

P0758

Shift Solenoid B Electrical

P0760

Shift Solenoid C Malfunction

P0763

Shift Solenoid C Electrical

P0778

2-4 brake pressure control solenoid valve (2-4 brake duty solenoid) circuit malfunction

P0785

2-4 brake timing control solenoid valve (2-4 brake timing solenoid) circuit malfunction

P1086

Tumble generator valve #2 (LH) position sensor circuit low input

P1087

Tumble generator valve #2 (LH) position sensor circuit high input

P1088

Tumble generator valve #1 (RH) position sensor circuit low input

P1089

Tumble generator valve #1 (RH) position sensor circuit high input

P1090

Tumble generator valve #1 (RH) malfunction (stuck open)

P1091

Tumble generator valve #1 (RH) malfunction (stuck close)

P1092

Tumble generator valve #2 (LH) malfunction (stuck open)

P1093

Tumble generator valve #2 (LH) malfunction (stuck close)

P1094

Tumble generator valve circuit #1 (open circuit)

P1095

Tumble generator valve circuit #1 (over current)

P1096

Tumble generator valve circuit #2 (open circuit)

P1097

Tumble generator valve circuit #2 (over current)

P1100

Starter Switch Circuit Malfunction

P1101

Neutral Position Switch Circuit High Input (A/T)

P1101

Neutral Position Switch Circuit Malfunction (M/T)

P1102

Pressure Sources Solenoid Valve Circuit Malfunction

P1103

Pressure Sources Switching Solenoid Valve Circuit

P1104

Engine Torque Control Signal Circuit Malfunction

P1106

Engine Torque Control Signal 2 Circuit Malfunction

P1110

Atmospheric pressure sensor low input

P1111

Atmospheric pressure sensor high input

P1112

Atmospheric pressure sensor range/performance problem

P1115

Engine Torque Control Cut Signal Circuit High Input

P1116

Engine Torque Control Cut Signal Circuit Low Input

P1120

Starter Switch High Input

P1121

Neutral Position Switch Circuit High Input [MT Vehicles]

P1121

Neutral Position Switch Circuit Low Input [AT Vehicles]

P1122

Pressure Sources Switching Valve Circuit High Input

P1124

TCS Signal Circuit High Input

P1130

Front oxygen sensor circuit malfunction (open circuit)

P1131

Front oxygen sensor circuit malfunction (short circuit)

P1134

Front oxygen (A/F) sensor microcomputer problem

P1137

Front oxygen (A/F) sensor circuit range/performance problem

P1139

Front oxygen (A/F) sensor #1 heater circuit performance/range problem

P1141

Mass Air Flow Sensor Circuit High Input

P1142

Mass Air Flow Sensor Circuit Low Input

P1143

Pressure Sensor Circuit Low Input

P1144

Pressure Sensor Circuit High Input

P1146

Pressure sensor circuit range/performance problem (high input)

P1150

Front Oxygen Sensor Heater Circuit High Input

P1151

Rear Oxygen Sensor Heater Circuit High Input

P1230

Fuel pump control unit malfunction

P1244

Wastegate control solenoid valve malfunction (low input)

P1245

Wastegate control solenoid valve malfunction (fail-safe)

P1301

Fire due to increased exhaust temperature

P1312

Exhaust temperature sensor malfunction

P1325

Knock Sensor Circuit Low Input

P1400

Fuel Tank Pressure Control Solenoid Low Input

P1420

Fuel Tank Pressure Control Solenoid High Input

P1421

Exhaust Gas Recirculation Circuit High Input

P1422

EVAP Purge Control Valve Circuit High Input

P1423

EVAP Vent Control High Input

P1440

Fuel Tank Pressure Control System Low Input

P1441

Fuel Tank Pressure Control System High Input

P1442

Fuel Level Sensor Circuit Range/Perf

P1443

EVAP Control System Vent Control Function Problem

P1480

Cooling fan relay 1 circuit high input

P1500

Radiator Fan Relay 1 Circuit Malfunction

P1501

Idle Control System Malfunction (Fail Safe)

P1502

Radiator Fan Function Problem

P1507

Idle Control System Malfunction (Fail Safe)

P1510

Idle Air Control Solenoid Signal 1 Circuit Low Input

P1511

Idle Air Control Solenoid Signal 1 Circuit High Input

P1512

Idle Air Control Solenoid Signal 2 Circuit Low Input

P1513

Idle Air Control Solenoid Signal 2 Circuit High Input

P1514

Idle Air Control Solenoid Signal 3 Circuit Low Input

P1515

Idle Air Control Solenoid Signal 3 Circuit High Input

P1516

Idle Air Control Solenoid Signal 4 Circuit Low Input

P1517

Idle Air Control Solenoid Signal 4 Circuit High Input

P1518

Starter switch circuit low input

P1520

Radiator Fan Relay 1 Circuit High Input

P1540

Vehicle Speed Sensor Malfunction 2

P1544

High exhaust temperature detected

P1560

Back-Up Voltage Circuit Malfunction

P1590

Neutral position switch circuit high input

P1591

Neutral position switch circuit low input

P1592

Neutral position switch circuit (MT model)

P1594

Automatic transmission diagnosis input signal circuit malfunction

P1595

Automatic transmission diagnosis input signal circuit low input

P1596

Automatic transmission diagnosis input signal circuit high input

P1698

Engine torque control cut signal circuit low input

P1699

Engine torque control cut signal circuit high input

P1700

Throttle Position Sensor Circuit Malfunction (A/T)

P1701

Cruise Control Set Signal Circuit Malfunction (A/T)

P1702

Auto Trans Diagnosis Input Signal Circuit

P1703

Low clutch timing control solenoid valve circuit malfunction

P1704

2-4 Brake Timing Solenoid Valve Circuit Malfunction

P1705

2-4 Brake Pressure Solenoid Valve (Solenoid D) Circuit

P1711

Engine torque control signal 1 circuit malfunction

P1712

Engine torque control signal 2 circuit malfunction

P1722

Auto Trans Diagnosis Input Signal High Input

P1742

Auto Trans Diagnosis Input Signal Malfunction






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