hi I have just brought a 52 plate octavia vrs, all is good but just to be nosey i connected my vagcom it says there is a pressure drop and something like check D.V?? it seems to be driving fine so any ideas what this could be would be very much appreciated

thanks in advance guys and girls

17705 fault code.

Can be all sorts of things.

Check the free things first like checking all vac pipes for splits, check none of the boost pipes is leaking and the DV is on properly.

Then do the cheap things like cleaning the throttle body.

If that doesn't solve it then start swapping N75 valves etc

ok cool will have a look this weekend