Persistant turbo boost fault. After turbo replacement all is well until about 6 mnths when the fault returns. 3 turbos later the fault has returned. On replacing the last turbo we also did the de cat and EGR blanking kit. The first 2 were replaced by the agents.

Found the fault. Dealer bent the passenger side aircon pipe which forced turbo boost sensor wire against sharp corner on cylinder head. Repaired and no more problem.