I haven't seen that one since my last post back there in December dude. Think it was cropping up on mine for about 2 weeks before it stopped appearing all by itself. Just before it started coming up I'd had the rocker cover off and the gaskets under it replaced but as far as I know the garage wouldn't have had to touch the cams or tensioners etc. How long has yours been appearing?
Based on the Ross Tech wiki description (
click here) which says it can be the adjuster being stuck, I wondered if maybe it was possible/easy to put the rocker cover on in such a way as to affect the camshaft adjuster, and maybe mine managed to work itself free.
That said, I was looking for info on something else altogether today and found a post on Pistonheads forums that suggested overfuelling could be a reason for high oil consumption so if those are linked then that might mean oil pressure to the top end could be affected too.
Sorry, not much
help!