This one took a few visits to work out. I also did some steering work on this vehicle.
Ac was not working, then working then sometimes cutting out after 10mins driving an intermittent fault we call it.
This VW has 2 way climate control that you’ll need a PHD in physics to operate anyway.
I know the system has refrigerant and there is power to compressor at least sometimes.
No trouble codes stored
After a lot of head scratching I was able to view the data and luckily for me the diag platform I use has a data listing function and even has a listing for why the compressor isn’t kicking in
Reason on this one is “fresh air too cold”
I know the ambient air temp sensor is ok as the reading on the dash is ok-
So I dig in and have a look at the other various sensors and find one that is reading 2c - I suspect this is the fault and try to bypass this but the system must recognise that the circuit has been shorted.
I explain to the customer and get a sensor.
I fitted the sensor and viewed the data- sorted 👍🏼
Was just in time for the crazy heatwave too
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