Hi,
I just had a valve job to clear a P1345 (35psi compression in cylinder 2). Upon driving it home from the mechanic I got P0014 ("B camshaft position timing overadvanced or system performance"). I cleared the code and later ran my X5 (2003 3.0i with 124k miles) in my garage at idle for 5 minutes while I admired the work done on the engine. The P0014 came on again. I've let the mechanic know and I plan to watch it through the weekend.

Any recommendations as to whether this is related to the valve job? Should I have the camshaft position sensor changed? Is it possible that the engine is 'over advanced' due to the removal/reinstall of the cylinder head?

This has been a long saga with my valve issue but I do think it is getting close to a final resolution - looking at the engine bay they really did take everything apart and even clean things as part of the valve job.