Hi guys im nav from Nottingham bought a 2003 vw golf gt tdi pd130 have owned it for a week or so now, surprisingly travelling on the motorway all of a sudden the turbo switches off which knocked down speed and engine management light switched on I had a laptop and the obd connection so I decided to connect it and came up with this code: P1557 Charge pressure control positive deviation any clue? I been to one garage and hes saying something about the turbo vains are sticking I got no clue what so ever please help?