Vectra AC and Temperature Sensor Issues

Sounds familiar. I had similar issues with my Vectra, though it was a few years back. Was the error code pointing specifically to the heat exchanger temperature sensor? Could also be a dodgy air conditioning control unit messing things up.

Yeah, the error code does point to the heat exchanger temp sensor. The air con unit being faulty was also something I had in mind. Did you end up replacing the sensor itself, or was it something else entirely?

In my case, the sensor was the culprit, but the garage said it triggered something in the AC control unit. They recommended doing both to be safe. Honestly, just get it checked out by a decent workshop, it'll save you the headache.

Thanks for the insight. Took it to the workshop. Turns out the air conditioning control unit was indeed defective due to the faulty sensor. Cost me 980€ for the repair. Appreciate the help!