Glad it all worked out. Sensors can fail, and early hour failures are why you have a warranty.

Going back over the thread, you first had this problem in December, and decided not to go to the dealer. The gas cap was a good thing to check, but as we said in December, if it isn't the cap, take it into the dealer and get them to read the code. You are unlikely to be able to fix anything with your code scanner, and it is a new vehicle under warranty. You had an ongoing problem for a period approaching 3 months, during which time the vehicle was giving you a message on the dash to go to the dealer. You could have had a failure and they might have seen the history log, with you continuing to drive it. That wouldn't necessarily have happened, but you are adding risk to the situation. Just my $0.02. Again, glad it worked out.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue