pressure drop between turbo and throttle

[robbellfth]

I have had this problem for a while. now and again my Leon Cupra coughs and splutters. after taking it to my local garage the problem seems to be a pressure drop between turbo and throttle valve.
The codes are 17535 fuel trim bank 1 fuel to rich and 17705 pressure drop between turbo and throttle valve check DU.
Can anyone help with this problem?

 

[RobM]

I had that combination of error codes when my MAF failed.

If you take it literally, it means your DV is on it's way out. It's always a good part to replace anyway, as it's a part that is prone to failure even on standard cars. But don't take it to mean that's definitely your problem.

 

[STEVEO@CYMRU]

i get 17705 at least a few times a week , i have a forge 007 and all my hoses are checked and the dv has been regreased etc but it still pops up all the time usually after my car has done a little splutter