Vectra Defrost Flap Error

I had a similar issue with my Vectra. Check the HVAC unit behind the dashboard panel; a faulty air distribution flap motor can cause those symptoms.

Thanks! Do you remember if the error code specifically pointed to the air distribution flap, or was it more generic? And was the blower motor affected?

The error was quite specific, referencing the defrost flap. The blower motor itself seemed to be working fine, just not directing air properly. I'd recommend a workshop; they'll be more precise.

Thanks for sharing your experience! I took your advice and visited a workshop. It was a defective cable connection to the defrost air distribution flap. The repair cost 95€. The heating now works perfectly.