dlawall

I have a check engine light with a code that gives a mass air sensor problem. The car has less than 70,000 miles on it and the mass air sensor was replaced at less than 40,000 miles. Could this be a bogus code caused by something else? The check engine light has been on for months and there is no difference in performance or gas mileage. Actually I don't think that there was anything wrong with it the first time when the dealer replaced it.