Good morning old thread.. Welcome to the future!
Ehhh..
Well, I got the P0441, however no strange noices.. Would the 996.110.129.05 -valve be the prime suspect? When activating the valve via Durametric I can hear a faint klick when activating but nothing when deactivating (or if it was the other way around)
Any chance the valve on 996.110.129.05 is removable? Itīs kind of expensive for what it is..
EDIT: I guess I can just saw off the hard line and make some kind of connection to fit to the new valve.
EDIT-2: The valve seem to be Bosch 0280142300 a lot cheaper than getting the whole Porsche assembly.
https://www.pelicanparts.com/More_Info/99611012953.htm?pn=996-110-129-53-M14