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
Normal scan voltage varies between .1-1.0 volt (100-999 mV) while in closed loop. Code 13 sets within one minute, if voltage remains between 0-.347 volt, but the system goes into open loop in about 15 seconds. Verify ground connections are clean and tight at terminals D6 and D7. An open circuit in these terminals result in a Code 13. If code is intermittent, see TESTS W/O CODES article.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.