Engine coolant temperature sensor failure?

2014 CADILLAC ATS
87,000 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC
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PERRI COYNE
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  • 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
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DANNY L
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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.
Images (Click to enlarge)
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Dec 5, 2020 at 12:26 PM
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PERRI COYNE
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Thank you very much Danny. I also believe that to be the case.
Dec 7, 2020 at 6:54 AM
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DANNY L
  • CERTIFIED EXPERT
  • 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