Re: disco4 P006a P00BD P1247 P0235 restricted performance
Mark Lamont
I think this is going to be a common problem with these twin turbo engines. I had a RR sport with the same problem, remove osf wheel and wheel arch liner, there is a large bypass valve just behind the radiator with electrical and vacuum connections. The linkage from the diaphragm seizes up, I took mine off to check it all but you may not need to. Freeze frame shows one maf reading high and the other virtually nothing.
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