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.
Diagnostic Aids
If a step is interrupted before completion, perform the remaining portion of the set procedure. Any portion of the set procedure that requires the engine at operating temperature may be repeated. This will allow most of the diagnostic tests to run and the remaining tests can be performed using the individual system set procedures.
| System | DTCs Required To Set System Status To YES |
|---|---|
| Component Monitoring | DTCs P0236, P0741 & P0742 |
| Exhaust Gas Recirculation (EGR) | DTCs P0101, P0401, P0404 & P1191 |
| Misfire Monitoring | DTCs P0300 & P0301-P0308 |
NO RELATED
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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.