Saxo climate control blower motor issue

I had a similar nightmare with my Saxo. AUC sensor issues can be a real pain. When you say 'blower motor is completely dead', do you mean it doesn't work on any speed setting? Have you checked the fuse for the blower motor itself? A blown fuse would be a much simpler (and cheaper) fix than a faulty sensor or wiring. Also, have you tried manually switching between fresh air and recirculation to see if that makes any difference?

Good shout! Yes, the blower motor is dead on all settings. I did check the blower motor fuse, and that was fine. And yes, I tried manually switching between fresh air and recirculation, but still nothing. Could it really just be a faulty sensor that kills the whole blower? The damn sensor costs a good bit of money, so I'd prefer to avoid throwing money at a problem, without knowing if it is exactly the sensor.

Okay, if the fuse is good and switching between fresh air and recirculation doesn't change anything, and considering the AUC sensor fault code, it's highly probable the sensor or its wiring is the core problem. While it could be something else entirely, the symptoms and the fault code strongly point in that direction. Given your expertise, you've probably checked the wiring harness and the connections. At this point, your best bet is to take it to a workshop that can properly diagnose the circuit and confirm the sensor is indeed faulty before replacing it. They will use a multimeter to test the wirings.

Okay, that's the reassurance I needed, thank you so much for your help. I bit the bullet and took her to the workshop. Turns out, it was indeed the cable or plug connection of the AUC sensor. They fixed the connection, reset the fault code and all is working as designed now, the final bill was 95€. Thanks again!