I had quite similar behaviour. Check the boost pressure sensor, it's located behind the rh fog light and is accessible if you pop the plastic trim.
Still a PITA to change, but it works without taking the front off. Sensor isn't very expensive so i'd just buy it and see if it changes anything.

V50 is P1 but I'll check if that works. Thanks

My M66 AWD stays with me! :) Okay, i've read something, that the drivers seat might be more complex. But if I integrate the stop-switches for power-off when been hit i should not worry to burn my car down? :D Or just use any high-current-compatable switches in first place? Sorry, as i mentioned i co...

Hello folks! Thanks for the great read on this thread. On friday i brought home a new interior for my V50. My old interior is fully manual, the new driver seat is powered. Since no one can help me with information on how to get the powered seat activated (e.g. with VIDA and a subscription, because n...