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My cdi 451 has gone limp with a fault code of p2078. drives but lacks any boost from turbo and not much power to get up hills. Wont go over 3000 revs. Engine warning light on and when cleared from diagnostic comes on relative soon. The clearing of the code doesnt remove the issue. Its done it a few time recently but has recovered and run fine. It actually happened cruising at 60 along the motorway in dry conditions. Seems to point to a short circuit of sorts. Any one had issues with their intake manifold sensors or any sensible suggestions? cheers
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