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.
Confirmation Driving Pattern For Readiness Monitor
For description of confirmation driving pattern for readiness monitor, see READINESS MONITOR DRIVE PATTERN under SELF-DIAGNOSTIC SYSTEM. Performing this confirmation pattern will activate the heated oxygen sensor No. 2 monitoring by the engine control module (ECM). The catalyst monitoring is performed simultaneously. This is useful for verifying the completion of a repair. For confirmation driving pattern, see Fig 1.
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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.