need help with cel's
 

Hi guys own the car for 2 weeks and the problems start.after iddleing for 30 min .then stop and go trafic . the CEL came on. went to my friends garage and used his scaner,got 3 codes that must be related.
1 0745 mixture formation enrichment above limit P2187
2 2091 to lean when idling p2187
3 0732 continuous camshaft adjustment (right):incorect position of the exhaust camshaft(p0013)
went for a drive tonight and the CEL was gone did not erase them.
the car had a new right cam put in by the PO under waranty. hope this is not related.car has no more waranty
Thanks
what can this be

Is this an E63? Does it have the Charcoal filters removed and when was the last oil change?
Lean at idle might stem from the charcoals being out or the oil dip stick not being seated properly. The incorrect cam shaft position might be from dirty oil.