Hi

Have this vw engined jeep that keeps going into overboost checked wastegate and piping all ok there is a large control box that controls all the vacuum operations on the engine is there any way of testing these its actually a vw box as same as 2.0 tdi are these common problem ?? also cant read eng management with vag com except through obd :-( must use different protocol ?
Kind regards John

P0234 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)