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 108 (ENGINE CONTROL SYSTEM SELF DIAGNOSTICS)SELF-DIAGNOSTIC SYSTEMFAIL-SAFE MODE CHART
2004 Toyota Celica GT, Standard
Fail-Safe Mode Chart
2004 Toyota Celica GT, StandardSECTION Fail-Safe Mode Chart
WARNING: This page is about a different car, the 2003 Toyota Matrix and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
If any of following codes are recorded, engine control module (ECM) enters fail-safe mode. See IDENTIFYING FAIL-SAFE MODE CHART table.
IDENTIFYING FAIL-SAFE MODE CHART
| DTC No. | Fail-Safe Operation | Fail-Safe Deactivation Conditions |
|---|---|---|
| P0100 | Ignition Timing Fixed At 10° BTDC | Returned To Normal Condition |
| P0110 | Intake Air Temperature Fixed At 68°F (20°C) | Returned To Normal Condition |
| P0115 | Engine Coolant Temperature Fixed At 176°F (80°C) | Returned To Normal Condition |
| P0120 | VTA Fixed At 0° | Following Condition Is Repeated At Least 2 Times Consecutively When Closed Throttle Position Switch Is OFF: VTA Is Greater Than Or Equal To 0.1 V & Less Than Or Equal To 0.95 V |
| P0135 & P0141 | Abnormal Heater Circuit Is Turned Off | Ignition Switch OFF |
| P0325 | Max. Timing Retardation | Ignition Switch OFF |
| P1300, P1305, P1310 & P1315 | Fuel Cut | Returned To Normal Condition |
| P1656 | It Cut Electrically Abnormal Circuit | Returned To Normal Condition |
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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.