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 MANUALSTOYOTA2005CELICA GT-S, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE (2ZZ-GE) - DIAGNOSTICS
2005 Toyota Celica GT-S, Standard
Engine (2ZZ-GE) - Diagnostics
2005 Toyota Celica GT-S, StandardSECTION Engine (2ZZ-GE) - Diagnostics
- Engine (2ZZ-GE)
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Registration
- Readiness Monitor Drive Pattern
- Problem Symptoms Table
- Terminals Of ECM
- Diagnostic Trouble Code Table
- Parts Location
- Circuit Inspection
- DTC P0010: Camshaft Position "A" Actuator Circuit (Bank 1)
- DTC P0011, P0012: Camshaft Position "A" - Timing Over-Advanced or System Performance/Timing Over-Retarded (Bank 1)
- DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
- DTC P0031, P0032, P0037, P0038: Oxygen Sensor Heater Control Circuit Low/High (Bank 1 Sensor 1 & 2)
- DTC P0100, P0102, P0103: Mass or Volume Air Flow Circuit Low/High Input
- DTC P0101: Mass or Volume Air Flow Circuit Range/Performance Problem
- DTC P0110, P0112, P0113: Intake Air Temperature Circuit Low/High Input
- DTC P0115, P0117, P0118: Engine Coolant Temperature Circuit Low/High Input
- DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem
- DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: Throttle Pedal Position Sensor/Switch "A & B" Circuit Low/High Input & Throttle/Pedal Position Sensor/Switch "A & B" Voltage Correction
- DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0130, P2195, P2196: Oxygen Sensor Circuit (Bank 1 Sensor 1) & Oxygen Sensor Signal Stuck Lean/Rich (Bank 1 Sensor 1)
- DTC P0133: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 1)
- DTC P0134: Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- DTC P0136, P0138: Oxygen Sensor Circuit Malfunction/High Voltage (Bank 1 Sensor 2)
- DTC P0171, P0172: System Too Lean/Rich (Bank 1)
- DTC P0300, P0301, P0302, P0303, P0304: Random/Multiple Cylinder Misfire Detected & Cylinder 1-4 Misfire Detected
- DTC P0327, P0328: Knock Sensor 1 Circuit Low/High Input (Bank 1 or Single Sensor)
- DTC P0335, P0339: Crankshaft Position Sensor "A" Circuit Malfunction/Intermittent
- DTC P0340, P0341: Camshaft Position Sensor "A" Circuit Range/Performance (Single Sensor)
- DTC P0351, P0352, P0353, P0354: Igniter Coil "A-D" Primary/Secondary Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1)
- DTC P0441, P0446: Evaporative Emission Control System Incorrect Purge Flow/Vent Control Circuit
- DTC P0442, P0456: Evaporative Emission Control System Leak Detected (Small Leak/Very Small Leak)
- DTC P0451, P0452, P0453: Evaporative Emission Control System Pressure Sensor/Switch Range/Performance/Low/High Input
- DTC P0500, P0503: Vehicle Speed Sensor "A" Intermittent/Erratic/High
- DTC P0504: Brake Switch "A"/"B" Correlation
- DTC P0505: Idle Air Control System
- DTC P0560: System Voltage
- DTC P0604, P0606, P0607, P0657: Internal Control Module Random Access Memory (RAM) Error; ECM/PCM Processor; Control Module Performance & Actuator Supply Voltage Circuit/Open
- DTC P0617: Starter Relay Circuit High
- DTC P0630: VIN not Programmed or Mismatch - ECM/PCM
- DTC P1645: Body ECU Malfunction
- DTC P2102, P2103: Throttle Actuator Control Motor Circuit Low/High
- DTC P2111, P2112: Throttle Actuator Control System-Stuck Open/Closed
- DTC P2118: Throttle Actuator Control Motor Current Range/Performance
- DTC P2119: Throttle Actuator Control Throttle Body Range/Performance
- DTC P2120, P2122, P2123, P2125, P2127, P2128, P2138: Throttle/Pedal Position Sensor/Switch "D & E" Circuit, DTC Throttle/Pedal Position Sensor/Switch "D" Circuit Low/High Input & Throttle/Pedal Position Sensor/Switch "D & E" Voltage Correlation
- DTC P2121: Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance
- DTC P2430, P2431, P2432, P2433: Secondary Air Injection System Air Flow/Pressure Sensor Circuit/Range/Performance Low/High Bank 1
- DTC P2440, P2441: Secondary Air Injection System Switching Valve Stuck Open/Closed Bank 1
- DTC P2444, P2445: Secondary Air Injection System Pump Stuck On/Off Bank 1
- DTC P2645: OCV for VVTL Circuit (Bank 1)
- DTC P2646, P2647: OCV for VVTL Close/Open Malfunction (Bank 1)
- ECM Power Source Circuit
- Inspection Procedure
- Fuel Pump Control Circuit
- MIL Circuit
RENDER: 1.0x
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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.