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uwe_storm3

GrandlandX temperature sensor AC issue

My 2021 GrandlandX diesel is throwing temperature sensor fault errors related to the heat exchanger, and the air con won't kick on. Are these things related? Coolant levels are fine, no obvious leaks.

4 comment(s)

idaschmid1

Sounds familiar. I had a similar issue with my GrandlandX. Temperature sensor problems can definitely mess with the AC. Is the engine overheating, or just the AC not working?

uwe_storm3 (Author)

No overheating, the engine temp seems normal. It's purely the air con refusing to play ball and the error codes pointing towards this heat exchanger temperature sensor. Could a faulty sensor really shut down the whole AC system, especially if the engine itself is running cool?

idaschmid1

Yeah, a faulty temp sensor can stop the AC from switching on as a safety measure. It’s likely the AC control unit. Best bet is to get it checked out at a workshop.

uwe_storm3 (Author)

Cheers for the confirmation. Dropped it off at the garage, and turns out you were spot on. They reckon the air conditioning control unit is defective because of the temperature sensor heat exchanger. Quoted me 980€ for the whole job. Ouch! Thanks for the advice, would have been chasing ghosts otherwise.

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