Just got the call on mine. Looks like there was a bunch of throttle faults,02 faults and a throttle too lean fault. Tech smoked the system and found a leak on the lower crank case hose of bank 2. Cracked o-ring was causing a major vacuum leak. They're keeping the truck til tomorrow to keep checking it out, but looks like problem finally solved.

Hope yours is this simple since it seems pretty common with these motors. Too much heat.

__________________
2011 X5M