Hi there I have seen a few posts like however seem to be a bit different so here goes start up car within seconds wastegate fault so I was on the motorway and have cheap diagnostic tool and I cleared the code while going along fault cleared and she ran great accelerated very rapidly and continued to drive like this for about half an hour until revs dropped to 1800rpm when it went back into limp mode it seems as long as it above 2000rpm no issues kickdown spot on . I did have have an issue with egg but changed it over and no further codes coming up other than Watergate wondering if anyone else has come up with this problem before thanks for reading