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 MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 13 (ENGINE CONTROL SYSTEM SELF-DIAGNOSTICS - V6)
2004 Toyota Celica GT, Standard
Section 13 (Engine Control System Self-Diagnostics - V6)
2004 Toyota Celica GT, StandardSECTION Section 13 (Engine Control System Self-Diagnostics - V6)
WARNING: This page is about a different car, the 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Programming
- Scan Tool Problems
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0100: Mass Airflow Meter Circuit
- DTC P0101: Mass Airflow Meter Circuit Range/Performance
- DTC P0110: Intake Air Temperature Sensor Circuit
- DTC P0115: Engine Coolant Temperature Sensor Circuit
- DTC P0116: Engine Coolant Temperature Sensor Circuit Range/Performance
- DTC P0120: Throttle Position Sensor Circuit
- DTC P0121: Throttle Position Sensor Circuit Range/Performance
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0128: Thermostat Malfunction
- DTC P0136: Heated Oxygen Sensor No. 2 Circuit
- DTC P0141: Heated Oxygen Sensor No. 2 Heater Circuit
- DTC P0171, DTC P0172, DTC P0174 Or DTC P0175: System Too Lean/Rich
- DTC P0300: Random Misfire Detected
- DTC P0301: Cylinder No. 1 Misfire Detected, DTC P0302: Cylinder No. 2 Misfire Detected, DTC P0303: Cylinder No. 3 Misfire Detected, DTC P0304: Cylinder No. 4 Misfire Detected, DTC P0305: Cylinder No. 5 Misfire Detected &/Or DTC P0306: Cylinder No. 6 Misfire Detected,
- DTC P0325 Or DTC P0330: Knock Sensor Circuit
- DTC P0335 Or DTC P1335: Crankshaft Position Sensor Circuit
- DTC P0340: Camshaft Position Sensor Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold
- DTC P0440: Evaporative Emission Control System Or DTC P0442: Evaporative Emission Control System Leak Detected
- DTC P0441: Incorrect EVAP Purge Flow Or DTC P0446: EVAP Vent Control Circuit
- DTC P0450: EVAP Pressure Sensor Circuit Or DTC P0451: EVAP Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor Circuit
- DTC P0505: Idle Air Control System Circuit
- DTC P1130 Or DTC P1150: Air/Fuel Sensor Circuit Range/Performance
- DTC P1133 Or DTC P1153: Air/Fuel Sensor Circuit Response
- DTC P1135 Or DTC P1155: Air/Fuel Sensor Heater Circuit
- DTC P1300: IGNITOR No. 1 Circuit Malfunction
- DTC P1305: IGNITOR No. 2 Circuit Malfunction
- DTC P1310: IGNITOR No. 3 Circuit Malfunction
- DTC P1315: IGNITOR No. 4 Circuit Malfunction
- DTC P1320: IGNITOR No. 5 Circuit Malfunction
- DTC P1325: IGNITOR No. 6 Circuit Malfunction
- DTC P1335: Crankshaft Position Sensor Circuit
- DTC P1346 Or DTC P1351: Variable Valve Timing Circuit Range/Performance
- DTC P1349 Or DTC P1354: Variable Valve Timing System Malfunction
- DTC P1350: Variable Valve Timing Sensor Circuit (Bank No. 2)
- DTC P1520: Stoplight Switch Signal Circuit
- DTC P1600: Engine Control Module Batt Circuit
- DTC P1645: Body Ecu Malfunction
- DTC P1656 Or DTC P1663: Oil Control Valve Malfunction
- DTC 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.