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.
Typical Enabling Conditions
All:
| Monitor runs whenever following DTCs are not present | None |
After engine stop:
| Time after engine start | 10 seconds or more |
| Battery voltage | 10.5 V or more |
| ECT sensor circuit | OK |
| ECT before engine stop | 20°C (68°F) or more |
| ECT change since engine stop | Less than 30°C (54°F) |
| Time that MAF is low before engine stop | Less than 60 seconds |
| Accumulated MAF amount before engine stop | 4,839 g (170.7 oz.) or more |
| Key-off duration | 30 minutes |
After cold engine start:
| Key-off duration | 5 hours |
| Time after engine start | 10 seconds or more |
| ECT sensor circuit | OK |
| ECT | 70°C (158°F) or more |
| Accumulated MAF amount | 4,839 g or more |
| Either of the following conditions 1 or 2 is met: | - |
| 1. Duration while engine load is low | 120 seconds or more |
| 2. Duration while engine load is high | 10 seconds or more |
Use the Manual With the Right Hardware
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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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