danielbaumann1

Mini Cooper Diesel Heat Exchanger Temperature Sensor Issue

My 2009 Mini Cooper diesel has a defective heat exchanger temperature sensor. The error is stored in the error memory, and I get an error message in the speedometer. The air conditioning system won't switch on either. The likely cause, according to the diagnostic, is a defective air conditioning control unit.

4 comment(s)

Sounds like sensor malfunction. Have you checked the temperature gauge itself? Is it reading unusually high or low?

The temperature gauge in the speedometer seems normal, but there's an error message. Do you think it's still worth checking the temperature gauge?

If the diagnostic points to the sensor in the heat exchanger, and the AC isn't working, it aligns with the HVAC system being affected. It would be best to visit a workshop to confirm.

Update it was indeed the heat exchanger temperature sensor. The Mini's back on the road now. Total cost was around 980€ as expected. Thanks for your help.

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