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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 88 (ENGINE CONTROLS - SELF-DIAGNOSTICS)
2004 Toyota Celica GT, Standard
Section 88 (Engine Controls - Self-Diagnostics)
2004 Toyota Celica GT, StandardSECTION Section 88 (Engine Controls - Self-Diagnostics)
WARNING: This page is about a different car, the 2003 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Powertrain Control Module Location
- Summary
- Connector Identification
- Diagnostic Tests
- Notes
- DTC P0010 & P0020
- DTC P0011, DTC P0012, DTC P0021 & DTC P0022
- DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1, Sensor A) & DTC P0018: Crankshaft Position - Camshaft Position Correlation (Bank 2, Sensor A)
- DTC P0036: Oxygen Sensor Heater Control Circuit (Bank 1, Sensor 2)
- DTC P0100: Mass Airflow (MAF) Sensor Circuit
- DTC P0101: Mass Airflow (MAF) Sensor Circuit Range/Performance Fault
- DTC P0110: Intake Air Temperature (IAT) Sensor Circuit
- DTC P0115: Engine Coolant Temperature (ECT) Sensor Circuit
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Fault & DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0120: Throttle (TP)/Pedal Position Sensor Switch "A" Circuit Malfunction
- DTC P0121: Throttle (TP)/Pedal Position Sensor Switch "A" Circuit Range/Performance Fault
- DTC P0128: Thermostat Fault
- DTC P0134: Oxygen (A/F) Sensor Circuit No Activity Detected (Bank 1, Sensor 1) & DTC P0154: Oxygen (A/F) Sensor Circuit No Activity Detected (Bank 2, Sensor 1)
- DTC P0135: Oxygen (A/F) Sensor Heater Circuit (Bank 1 Sensor 1) & DTC P0155: Oxygen (A/F) Sensor Heater Circuit (Bank 2 Sensor 1)
- DTC P0136: Heated Oxygen Sensor Circuit Fault (Bank 1 Sensor 2)
- DTC P0171, DTC P0172, DTC P0174, DTC P0175
- DTC P0300, P0301, P0302, P0303, P0304, P0305 & P0306
- DTC P0325 & DTC P0330
- DTC P0335: Crankshaft Position (CKP) Sensor "A" Circuit & DTC P0339: Crankshaft Position Sensor Circuit Intermittent
- DTC P0340, DTC P0341, DTC P0345 & DTC P0346
- DTC P0351, DTC P0352, DTC P0353, DTC P0354, DTC P0355 & DTC P0356
- DTC P0420: Catalyst System Efficiency Below Threshold
- DTC P0441: Incorrect EVAP Purge Flow Or DTC P0446: EVAP Vent Control Fault
- DTC P0442: Evaporative Emission Control System Leak Detected (Small Leak) & DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0451: EVAP Pressure Sensor Range/Performance Fault
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction
- DTC P0505: Idle Control System Malfunction & DTC P0511: Idle Air Control Circuit
- DTC P0560: System Voltage
- DTC P0724: Brake Switch "B" Circuit High
- DTC P2195, DTC P2196, DTC P2197, DTC P2198, DTC P2237 & DTC P2240
- DTC P2A00: A/F Sensor Circuit Slow Response (Bank 1 Sensor 1) & DTC P2A03: A/F Sensor Circuit Slow Response (Bank 2 Sensor 1)
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.