air pump, some of us have one, usually goes on when cold, sounds like a running fan motor sound coming from front of car behind headlight...trouble with mine is that it seems kinda loud...ran onwithout key in car a couple of times, had to disconnect battery to shut off..anyone ever have this issue? anyone know anything to add>

honda checked it out, says it is louder than normal, they could not make it run with no key and that in calif warranty on emmissions will take care of it if it goes...light will come on engine will continue to run if there is an issue.