Well the car ran fine since my last post, now has limped twice in the last two days again!
Stuck behind a fully loaded hgv struggling up a hill and just keeping up with it!
Anyway, had a independent mechanic I know run the codes with his snap-on tool and still the same 6805.
Live data showed everything else seemingly ok, pad vac switching fine etc.
Took the pipe from the EGR to inlet manifold off, a good layer of oily gunk stuck to the sides about 1mm thick so not as bad as some peoples photo's on here.
Had a good trickle of oil floating around in the pipe, so mechanic thinks my turbo is leaking oil internally, I guess on the inlet side.
The car does not seem to loose oil on the dipstick level between services, and it does not have any visible smoke.
Now checking out options on where to go next.
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