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.
Circuit Description
While engine is warming, PCM monitors ECT sensor to determine the amount of time it takes engine to reach coolant temperature required for closed-loop operation. DTC will set if PCM determines that ECT does not reach minimum coolant temperature required for closed-loop operation in a specified amount of time.
For duplication of DTC, ensure:
- DTCs P0112, P0113, P0117 and P0118 are not set.
- Engine is running.
- ECT between -33°F (-36°C) and 104°F (40°C) at engine start-up.
- IAT is greater than 19°F (-7°C).
- Vehicle speed is greater than one MPH.
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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.