Well I took it to a repair shop that was referred to me by the shop that we take our VW to. He had the Snap On diagnostic tool plugged in within the engine compartment as well as the one next to the emergency brake. He also got the PO200 reading. He checked a few things out and asked if I recently fueled up? I said about a week ago and he said that he thought that it was fuel related, so he cleared the code and told me to drive it home and call him if it came on again. I asked him what I owed him after he played around with it for 45 minutes and he said "nothing, I didn't do anything"! I drove it home and so far so good. Maybe this was a blessing in disguise as now I have a mechanic that I can trust, with MB experience for over 20 years! I am absolutely in love with this car, my wife says that it is unhealthy!