newbie...turbo boost control position sensor circuit fault

i am on a road trip with a fault p2564 -turbo boost control position sensor circuit- there doesent seem to be any lack of power....how do i fix this??? is there a ground wire some where i could check?? it was checked at a vw repair shop before i left and they said it would be fine to drive.

Dustin.

Per your profile you're looking for a tdi. I assume you have one. What year/model?

I would clear the code and see if it comes back

it's a 04 golf. it had been reset at the shop and it came back once i started the car again. Not sure why it keeps coming back and it has the machnic stumped at the shop....