Sometimes, well actually more than 'sometimes', people have to justify spending a whole lot of money for something that is fixed no matter how many tell him/her that a simple fix (fix = dollars = simple = money spent).

I wonder if that European mechanic has the equipment to reset that errant dash light which reaffirmed a 'fix' when they installed a BOSCH MAF sensor. Even if they didn't or iit wasn't necessary to 'reset' anything, I agree the car is fixed. But it would have been much cheaper if he had bought a Bosch MAF sensor and correctly installed it. Oh, all those analyzers a shop uses help justify the high bill. I would probably win a bet that given the in-check interview he probably had a good idea what was wrong with it without hooking it up to all that equipment. I do agree though it helps confirm there isn't another problem related to those codes. A message to OP, take the other sensors back to their stores and get some money back. In the future, go BOSCH, or walk home.