Engine coolant temperature sensor failure?

2014 CADILLAC ATS

87,000 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC

PERRI COYNE

MEMBER
2 POSTS

Just replaced thermostat on the car listed above on 12/4/2020. Getting no reading on the dash gauge, and the needle remains on cold setting under normal driving conditions. However, getting a dash warning the A/C is turned off due to hot engine. The fan runs for about 5-10 minutes even after a 3-minute drive. Could this be an engine coolant temperature sensor failure?

Dec 5, 2020 at 11:50 AM

DANNY L

✓ASE Certified Mechanic
5,648 POSTS

Hello, I'm Danny.

Yes, that sounds like you could be having an issue with the coolant temperature sensor. Here is a tutorial for you to view on the sensors replacement:

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

I've attached 2 pictures below of the location and steps for replacement for your car. Hope this helps and thanks for using 2CarPros.

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Dec 5, 2020 at 12:26 PM

PERRI COYNE

MEMBER
2 POSTS

Thank you very much Danny. I also believe that to be the case.

Dec 7, 2020 at 6:54 AM

DANNY L

✓ASE Certified Mechanic
5,648 POSTS

You're welcome!
Keep us updated when the repair is completed. Thanks again for using 2CarPros and we hope you will use our site again in the future.

Danny-

Dec 7, 2020 at 3:01 PM

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