315 sprinter limp mode


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Nov 14, 2020
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Your Mercedes
sprinter 315
hi I have a mercedes sprinter that drives ok until around 2.5k rpm then goes limp mode ,

I have a few codes p1955, also def pressure high pressure , also turbo underboost , has anyone drilled the def out as the garage said its probably stuffed , also they did a smoke test on the intercooler system and no leaks in the boost system so they said possibly the turbo its a twin turbo too ! do you think I should bite the bullet for a new turbo and drill the dpf ?

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