turn off a/c engine hot warning, analog gauge says cold what is causing this?

Asked by Guru952R9C Jan 16, 2021 at 11:58 AM about the 2008 Chevrolet Impala LS FWD

Question type: Maintenance & Repair

Engine hot turn off A/C-digital warning temp gauge at zero or bottomed out at cold, running fine?

1 Answer
155,365

james answered 3 years ago

Sounds like a bad coolant temperature sensor or a bad connection at the coolant temperature sensor. When the computer does not receive a signal from the coolant temperature sensor it assumes the engine is overheating to prevent engine damage. The fact that the temperature gauge is staying on cold and the overheating message is being displayed without the engine overheating definitely points to that. Hope that helps! Jim

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