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.
Fail-Safe Chart
If any of the following codes are recorded, the ECM enters the fail-safe mode.
| DTC No. | Fail-Safe Operation | Fail-Safe Deactivation Conditions |
|---|---|---|
| P0031 P0032 P0037 P0038 |
The Heater Circuit In Which The Abnormality Is Detected Is Turned Off | Ignition Switch OFF |
| P0100 P0102 P0103 |
Ignition Timing Is Calculated From Engine Speed And A Throttle Angle | "Pass" Condition Detected. |
| P0110 P0112 P0113 |
Intake Air Temp. Is Fixed At 20°C (68°F) | "Pass" Condition Detected. |
| P0115 P0117 P0118 |
Engine Coolant Temp. Is Fixed At 80°C (176°F) | "Pass" Condition Detected. |
| P0120 P0122 P0123 |
Fuel Cut Intermittently | "Pass" Condition Detected And Ignition Switch OFF |
| P0121 | Fuel cut intermittently | "Pass" Condition Detected And Ignition Switch OFF |
| P0325 | Max. Ignition Timing Retardation | Ignition Switch OFF |
| P0351 P0352 P0353 P0354 |
Fuel cut | "Pass" Condition Detected. |
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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.
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