Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA20024RUNNER SR5, 4WDREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXENGINE PERFORMANCE DTCS
2002 Toyota 4Runner SR5, 4WD
Engine Performance DTCS
2002 Toyota 4Runner SR5, 4WDSECTION Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| P0100 | Mass Airflow Meter Circuit |
| P0101 | Mass Airflow Meter Circuit Range/Performance |
| P0110 | Intake Air Temperature Sensor Circuit |
| P0115 | Engine Coolant Temperature Sensor Circuit |
| P0116 | Engine Coolant Temperature Sensor Circuit Range/Performance |
| P0120 | Throttle Position Sensor Circuit |
| P0121 | Throttle Position Sensor Circuit Range/Performance |
| P0125 | Insufficient Coolant Temperature For Closed Loop Fuel Control |
| P0128 | Thermostat Malfunction |
| P0136 | Heated Oxygen Sensor Circuit |
| P0141 | Heated Oxygen Sensor Heater Circuit |
| P0171 | System Too Lean |
| P0172 | System Too Rich |
| P0300 | Random/Multiple Cylinder Misfire Detected |
| P0301 | Cylinder No. 1 Misfire Detected |
| P0302 | Cylinder No. 2 Misfire Detected |
| P0303 | Cylinder No. 3 Misfire Detected |
| P0304 | Cylinder No. 4 Misfire Detected |
| P0305 | Cylinder No. 5 Misfire Detected |
| P0306 | Cylinder No. 6 Misfire Detected |
| P0325 | Knock Sensor No. 1 Circuit |
| P0330 | Knock Sensor No. 2 Circuit |
| P0335 | Crankshaft Position Sensor Circuit |
| P0340 | Camshaft Position Sensor Circuit |
| P0420 | Catalyst System Efficiency Below Threshold |
| P0440 | Evaporative Emission Control System |
| P0441 | Incorrect EVAP Purge Flow |
| P0442 | EVAP Leak Detected |
| P0446 | EVAP Vent Control Malfunction |
| P0450 | EVAP Pressure Sensor Circuit |
| P0451 | EVAP Pressure Sensor Range/Performance |
| P0500 | Vehicle Speed Sensor Circuit |
| P0505 | Idle Control System Malfunction |
| P1120 | Accelerator Pedal Position Sensor Circuit |
| P1121 | Accelerator Pedal Position Sensor Range/Performance |
| P1125 | Throttle Control Motor Circuit |
| P1126 | Magnetic Clutch Circuit |
| P1127 | Electronic Throttle Control System Actuator Power Source Circuit |
| P1128 | Throttle Control Motor Lock Malfunction |
| P1129 | Electronic Throttle Control System Malfunction |
| P1130 | Air/Fuel Sensor Circuit Range/Performance |
| P1133 | Air/Fuel Sensor Circuit Response Malfunction |
| P1135 | Air/Fuel Sensor Heater Circuit Malfunction |
| P1300 | Ignitor Circuit |
| P1335 | Crankshaft Position Sensor Circuit |
| P1520 | Stoplight Switch Signal Circuit |
| P1600 | Engine Control Module BATT Circuit |
| P1633 | ECM Malfunction (Electronic Throttle Control System Circuit) |
| P1780 | Park/Neutral Position Switch Circuit |
RENDER: 1.0x
NO RELATED
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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.