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.
DTC P0116: ECT Circuit Problem: Condition
After vehicle has been cold soaked (turned off) for 6 hours, PCM monitors ECT sensor maximum and minimum value when engine is started and 5 minutes after starting engine. If ECT sensor maximum and minimum values vary less than 10°F, DTC is set. Causes may include the following:
- Faulty ECT sensor.
- Faulty connector.
- PCM malfunction.
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.