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marieschulz22

Micra temperature sensor error

Hi, I have a 2023 Nissan Micra diesel with 245394 km. The temperature sensor heat exchanger seems to be defective. I'm getting an error in the memory and a message on the speedometer, plus the AC won't switch on. Any ideas?

Summary of the thread

A 2023 Nissan Micra diesel with high mileage is experiencing a temperature sensor error, causing an error message and preventing the AC from functioning. The issue is likely due to a defective air conditioning control unit, which can send incorrect signals interpreted as a sensor malfunction. The suggested solution is to have the AC control unit checked and potentially replaced, which resolved the problem after a workshop visit.

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4 comment(s)

jana_eule1

Sounds familiar! I had a similar issue with my Micra. Check your air conditioning control unit. It might be defective. Is the engine cooling properly, or are you seeing any signs of coolant leak?

marieschulz22 (community.author)

Thanks for the tip! No coolant leak that I can see, and the engine temp seems normal. But why would the AC control unit cause the temperature sensor error? Is it like a domino effect?

jana_eule1

Precisely! The AC control unit, when faulty, can send erroneous signals which the system interprets as a temperature sensor malfunction. Think of it like a bad translator messing up the message. Considering your symptoms and mileage, a defective AC control unit is the likely culprit. You might need to visit a workshop for diagnostics.

marieschulz22 (community.author)

Thanks a lot! I took it to the workshop and you were spot on. Turns out the AC control unit was indeed defective and throwing off the sensor readings. Repair cost me 980€, but at least it's fixed now.

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NISSAN

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MICRA