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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 112 (ENGINE CONTROL SYSTEM SELF DIAGNOSTICS)DIAGNOSTIC TROUBLE CODE DEFINITIONS
2004 Toyota Celica GT, Standard
Diagnostic Trouble Code Definitions
2004 Toyota Celica GT, StandardSECTION Diagnostic Trouble Code Definitions
WARNING: This page is about a different car, the 2003 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC (1) | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| P0100 | Mass Airflow Meter Circuit | ||||||||||
| P0101 | Mass Airflow Meter Circuit Range/Performance | ||||||||||
| P0110 (2) | Intake Air Temperature Sensor Circuit | ||||||||||
| P0115 (2) | Engine Coolant Temperature Sensor Circuit | ||||||||||
| P0116 | Engine Coolant Temperature Sensor Circuit Range/Performance | ||||||||||
| P0120 (2) | 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 (Bank 1 Sensor 2) | ||||||||||
| P0141 | Heated Oxygen Sensor Heater Circuit (Bank 1 Sensor 2) | ||||||||||
| P0156 | Heated Oxygen Sensor Circuit (Bank 2 Sensor 2) | ||||||||||
| P0161 | Heated Oxygen Sensor Heater Circuit (Bank 2 Sensor 2) | ||||||||||
| P0171 | System Too Lean (Bank No. 1) | ||||||||||
| P0172 | System Too Rich (Bank No. 1) | ||||||||||
| P0174 | System Too Lean (Bank No. 2) | ||||||||||
| P0175 | System Too Rich (Bank No. 2) | ||||||||||
| 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 | ||||||||||
| P0325 (2) | Knock Sensor Circuit | ||||||||||
| P0335 | Crankshaft Position Sensor Circuit | ||||||||||
| P0340 | Camshaft Position Sensor Circuit | ||||||||||
| P0420 | Catalyst System Efficiency Below Threshold (Bank No. 1) | ||||||||||
| P0430 | Catalyst System Efficiency Below Threshold (Bank No. 2) | ||||||||||
| P0440 | Evaporative Emission Control System | ||||||||||
| P0441 | Incorrect EVAP Purge Flow | ||||||||||
| P0442 | Evaporative Emission Control System Leak Detected (Small Leak) | ||||||||||
| 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 | ||||||||||
| P1130 | Air/Fuel Sensor Circuit (Bank 1 Sensor 1) | ||||||||||
| P1133 | Air/Fuel Sensor Circuit Response Malfunction (Bank 1 Sensor 1) | ||||||||||
| P1135 | Air/Fuel Sensor Heater Circuit (Bank 1 Sensor 1) | ||||||||||
| P1150 | Air/Fuel Sensor Circuit (Bank 2 Sensor 1) | ||||||||||
| P1153 | Air/Fuel Sensor Circuit Response Malfunction (Bank 2 Sensor 1) | ||||||||||
| P1155 | Air/Fuel Sensor Heater Circuit (Bank 2 Sensor 1) | ||||||||||
| P1300 (2) | Ignitor No. 1 Circuit | ||||||||||
| P1305 (2) | Ignitor No. 2 Circuit | ||||||||||
| P1310 (2) | Ignitor No. 3 Circuit | ||||||||||
| P1315 (2) | Ignitor No. 4 Circuit | ||||||||||
| P1335 (4) | Crankshaft Position Sensor Circuit | ||||||||||
| P1346 | Variable Valve Timing Sensor Circuit Range/Performance | ||||||||||
| P1349 | Variable Valve Timing System Malfunction | ||||||||||
| P1520 | Stoplight Switch Signal Circuit | ||||||||||
| P1600 | Engine Control Module BATT Circuit | ||||||||||
| P1656 | Oil Control Valve Circuit Malfunction | ||||||||||
| P1780 (5) | Neutral Start Switch Malfunction | ||||||||||
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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.