emilia_himmel1

Fiorino AC and Temperature Sensor Issue

Hi, I have a 2001 Fiat Fiorino, diesel engine, with about 62000 km. I'm having a problem with what I think is the temperature sensor. I get an error and a message on the speedometer. Also, the AC isn't turning on. Any ideas?

A 2001 Fiat Fiorino with a diesel engine was experiencing issues with the temperature sensor, resulting in an error message on the speedometer and the AC not functioning. The problem was suspected to be a faulty heat exchanger temperature sensor, potentially linked to a malfunctioning air conditioning control unit. After taking the vehicle to a workshop, it was confirmed that the defective sensor and control unit were the causes, and repairs were successfully completed.

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4 comment(s)

Sounds like a faulty sensor. Since the AC isn't working, it could be related to the heat exchanger temperature sensor. Has the system been checked for refrigerant?

Refrigerant levels haven't been checked. But if the sensor is the issue, could that really stop the whole AC system from kicking in?

Yes, a defective heat exchanger temperature sensor can definitely prevent the AC from activating. Often, it's linked to a control unit issue. Given the symptoms, it's likely your air conditioning control unit is faulty. I'd recommend getting it properly diagnosed at a workshop.

Thanks for the advice! I took it to a shop, and you were right. The heat exchanger temperature sensor was defective, which was caused by the AC control unit. Repair ended up costing 980€. All fixed now!

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FIAT

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FIORINO