[gsxrken]

I hate them too. Usually happen right as the annual NYS inspection is due, and the car won’t pass with it on. Clearing the code just before the visit doesn’t help either b/c the computer “knows” it was just cleared and must complete a few drive cycles.
So some $300 BMW secondary air pump or the like needs to be identified and swapped out before it can get inspected. I don’t mind addressing misfire codes but the gas cap stuff gets criminally expensive on an older car.