Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION CHART

Code No.

Circuit Affected

P0106 ⁽¹⁾

Intake Air Temperature & Pressure Sensor Circuit Range/Performance Problem

P0106 ⁽²⁾

Intake Manifold Pressure Sensor Circuit Range/Performance Problem

P0107 ⁽¹⁾

Intake Air Temperature & Pressure Sensor Circuit Low Input

P0107 ⁽²⁾

Intake Manifold Pressure Sensor Circuit Low Input

P0108 ⁽¹⁾

Intake Air Temperature & Pressure Sensor Circuit High Input

P0108 ⁽²⁾

Intake Manifold Pressure Sensor Circuit High Input

P0111 ⁽¹⁾

Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem

P0111 ⁽²⁾

Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem

P0112 ⁽¹⁾

Intake Air Temperature (IAT) Sensor Circuit Low Input

P0112 ⁽²⁾

Intake Air Temperature (IAT) Sensor Circuit Low Input

P0113 ⁽¹⁾

Intake Air Temperature (IAT) Sensor Circuit High Input

P0113 ⁽²⁾

Intake Air Temperature (IAT) Sensor Circuit High Input

P0116

Engine Coolant Temperature (ECT) Sensor Circuit Low Input

P0117

Engine Coolant Temperature (ECT) Sensor Circuit High Input

P0121

Throttle Position (TP) Sensor Circuit Range/Performance Problem (High Input)

P0122

Throttle Position (TP) Sensor Circuit Low Input

P0123

Throttle Position (TP) Sensor Circuit High Input

P0125

Engine Coolant Temperature Too Low For Closed Loop Fuel Control

P0130 ⁽¹⁾

Front Oxygen Sensor (O2S) Circuit Range/Performance Problem

P0131 ⁽²⁾

Front Oxygen Sensor (O2S) Circuit Range/Performance Problem (Low Input)

P0132 ⁽²⁾

Front Oxygen Sensor (O2S) Circuit Range/Performance Problem (High Input)

P0133

Front Oxygen Sensor (O2S) Circuit Slow Response

P0136

Rear Oxygen Sensor (O2S) Circuit Malfunction

P0139

Rear Oxygen Sensor (O2S) Circuit Slow Response

P0141 ⁽¹⁾

Rear Oxygen Sensor (O2S) Heater Circuit Malfunction/Low Input

P0141 ⁽²⁾

Rear Oxygen Sensor (O2S) Heater Circuit Malfunction/Low Input

P0170 ⁽¹⁾

Fuel Trim Malfunction

P0171 ⁽²⁾

Fuel Trim Malfunction (Too Lean)

P0172 ⁽²⁾

Fuel Trim Malfunction (Too Rich)

P0181

Fuel Temperature Sensor "A" Circuit Range/Performance Problem

P0182

Fuel Temperature Sensor "A" Circuit Low Input

P0183

Fuel Temperature Sensor "A" Circuit High Input

P0301

Cylinder No. 1 Misfire Detected

P0302

Cylinder No. 2 Misfire Detected

P0303

Cylinder No. 3 Misfire Detected

P0304

Cylinder No. 4 Misfire Detected

P0325

Knock Sensor (KS) Circuit Malfunction

P0335

Crankshaft Position (CKP) Sensor Circuit Malfunction

P0336

Crankshaft Position (CKP) Sensor Circuit Range/Performance Problem

P0340

Camshaft Position (CMP) Sensor Circuit Malfunction

P0341

Camshaft Position (CMP) Sensor Circuit Range/Performance Problem

P0420

Catalyst System Efficiency Below Threshold

P0440

EVAP System Malfunction

P0442 ⁽¹⁾

EVAP System Purge Control Valve Circuit Malfunction

P0443

EVAP System Purge Control Valve Circuit Low Input

P0446

EVAP System Vent Control Circuit Low Input

P0451

EVAP System Pressure Sensor Range/Performance Problem

P0452 ⁽³⁾

EVAP System Pressure Sensor Low Input

P0452 ⁽⁴⁾

EVAP System Pressure Sensor Low Input

P0453 ⁽³⁾

EVAP System Pressure Sensor High Input

P0453 ⁽⁴⁾

EVAP System Pressure Sensor High Input

P0461

Fuel Level Sensor Circuit Range/Performance Problem

P0462

Fuel Level Sensor Circuit Low Input

P0463

Fuel Level Sensor Circuit High Input

P0480

Cooling Fan Relay No. 1 Circuit Low Input

P0483

Cooling Fan Function Problem

P0500

Vehicle Speed Sensor (VSS) Malfunction

P0505 ⁽²⁾

Idle Control System Low Input

P0506 ⁽¹⁾

Idle Control System RPM Lower Than Expected

P0506 ⁽²⁾

Idle Control System RPM Lower Than Expected

P0507

Idle Control System RPM Higher Than Expected

P0601

Internal Control Module Memory Check Sum Error

P0703 ⁽⁵⁾

Brake Switch Input Malfunction

P0705 ⁽⁵⁾

Transmission Range Sensor Circuit Malfunction (A/T)

P0710 ⁽⁵⁾

Transmission Fluid Temperature Sensor Circuit Malfunction (A/T)

P0715 ⁽⁵⁾

Torque Converter Turbine Speed Sensor Circuit Malfunction (A/T)

P0720 ⁽⁵⁾

Output Speed Sensor (VSS No. 2) Circuit Malfunction (A/T)

P0725 ⁽⁵⁾

Engine Speed Input Circuit Malfunction

P0731 ⁽⁵⁾

Gear 1 Incorrect Ratio

P0732 ⁽⁵⁾

Gear 2 Incorrect Ratio

P0733 ⁽⁵⁾

Gear 3 Incorrect Ratio

P0734 ⁽⁵⁾

Gear 4 Incorrect Ratio

P0740 ⁽⁵⁾

Torque Converter Clutch System Malfunction (A/T)

P0743 ⁽⁵⁾

Torque Converter Clutch System (Lock-Up Duty Solenoid) Electrical (A/T)

P0748 ⁽⁵⁾

Pressure Control Solenoid (Line Pressure Duty Solenoid) Electrical (A/T)

P0753 ⁽⁵⁾

Shift Solenoid "A" (No. 1) Electrical (A/T)

P0758 ⁽⁵⁾

Shift Solenoid "B" (No. 2) Electrical (A/T)

P1100

Starter Switch Circuit Low Input

P1101

Neutral Position Switch Circuit High Input (A/T)

P1101

Neutral Position Switch Circuit Low Input (M/T)

P1103

Engine Torque Control Signal No. 1 Circuit Malfunction (A/T)

P1106

Engine Torque Control Signal No. 2 Circuit Malfunction (A/T)

P1110 ⁽¹⁾

Atmospheric Pressure Sensor Circuit Low Input

P1110 ⁽²⁾

Atmospheric Pressure Sensor Circuit Low Input

P1111 ⁽¹⁾

Atmospheric Pressure Sensor Circuit High Input

P1111 ⁽²⁾

Atmospheric Pressure Sensor Circuit High Input

P1112 ⁽¹⁾

Atmospheric Pressure Sensor Circuit Range/Performance Problem

P1112 ⁽²⁾

Atmospheric Pressure Sensor Circuit Range/Performance Problem

P1115

Engine Torque Control Cut Signal Circuit High Input (A/T)

P1116

Engine Torque Control Cut Signal Circuit Low Input (A/T)

P1120

Starter Switch Circuit High Input

P1121

Neutral Position Switch Circuit Low Input (A/T)

P1121

Neutral Position Switch Circuit High Input (M/T)

P1130 ⁽¹⁾

Front Oxygen Sensor (O2S) Circuit Malfunction (Open Circuit)

P1130 ⁽²⁾

Front Oxygen Sensor (O2S) Circuit Malfunction (Open Circuit)

P1131 ⁽¹⁾

Front Oxygen Sensor (O2S) Circuit Malfunction (Short Circuit)

P1131 ⁽²⁾

Front Oxygen Sensor (O2S) Circuit Malfunction (Short Circuit)

P1132 ⁽¹⁾

Front Oxygen Sensor (O2S) Heater Circuit Low Input

P1132 ⁽²⁾

Front Oxygen Sensor (O2S) Heater Circuit Low Input

P1133

Front Oxygen Sensor (O2S) Heater Circuit High Input

P1134 ⁽²⁾

Front Oxygen Sensor (O2S) Micro-Computer Problem

P1139 ⁽²⁾

Front Oxygen Sensor (O2S) No. 1 Heater Circuit Range/Performance Problem

P1142 ⁽¹⁾

Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)

P1142 ⁽²⁾

Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)

P1151 ⁽¹⁾

Rear Oxygen Sensor (O2S) Heater Circuit High Input

P1151 ⁽²⁾

Rear Oxygen Sensor (O2S) Heater Circuit High Input

P1207 ⁽¹⁾

Air Assist Injector Solenoid Valve Circuit Low Input

P1208 ⁽¹⁾

Air Assist Injector Solenoid Valve Circuit High Input

P1325 ⁽¹⁾

Knock Sensor (KS) Circuit Low Input

P1400

Fuel Tank Pressure Control Solenoid Valve Circuit Low Input

P1420

Fuel Tank Pressure Control Solenoid Valve Circuit High Input

P1422

EVAP System Purge Control Solenoid Valve Circuit High Input

P1423

EVAP System Vent Control High Input

P1442 ⁽¹⁾

Fuel Level Sensor Circuit Range/Performance Problem 2

P1443

EVAP System Vent Control Function Problem

P1445 ⁽¹⁾

Air Assist Injector Solenoid Valve Malfunction

P1490 ⁽¹⁾

Thermostat Malfunction

P1505 ⁽²⁾

Idle Control System Circuit High Input

P1507 ⁽¹⁾

Idle Control System Malfunction (Fail-Safe)

P1507 ⁽²⁾

Idle Control System Malfunction (Fail-Safe)

P1510 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 1 Circuit Low Input

P1511 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 1 Circuit High Input

P1512 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 2 Circuit Low Input

P1513 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 2 Circuit High Input

P1514 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 3 Circuit Low Input

P1515 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 3 Circuit High Input

P1516 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 4 Circuit Low Input

P1517 ⁽¹⁾

Idle Air Control (IAC) Solenoid Valve Signal No. 4 Circuit High Input

P1520

Radiator Fan Relay No. 1 Circuit High Input

P1540 ⁽¹⁾

Vehicle Speed Sensor (VSS) Malfunction 2

P1560

Back-Up Voltage Circuit Malfunction

P1700 ⁽⁵⁾

Throttle Position (TP) Sensor Circuit Malfunction (A/T)

P1701 ⁽⁵⁾

Cruise Control Set Signal Circuit Malfunction (A/T)

P1702 ⁽⁵⁾

Transmission Diagnosis Input Signal Circuit Low Input (A/T)

P1703 ⁽⁵⁾

Low Clutch Timing Control Solenoid Valve Circuit Malfunction (A/T)

P1704 ⁽⁵⁾

2-4 Brake Timing Control Solenoid Valve Circuit Malfunction (A/T)

P1705 ⁽⁵⁾

2-4 Brake Pressure Control Solenoid Valve Circuit Malfunction (A/T)

P1722 ⁽⁵⁾

Transmission Diagnosis Input Signal Circuit High Input (A/T)

P1742 ⁽⁵⁾

Transmission Diagnosis Input Signal Circuit Malfunction (A/T)

⁽¹⁾	Except 2.2L and Legacy 2.5L M/T.

⁽²⁾	2.2L and Legacy 2.5L M/T only.

⁽³⁾	Forester & Impreza.

⁽⁴⁾

Legacy.

⁽⁵⁾	Covered in entirety in appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.