I don't know. I did ask the emissions guy (because I had to get the EGR changed so it would pass emissions) and all he said was, "If the light isn't on, I can run your check". But I'm not sure I made the point about how I had turned the light off with the Ultragauge.

Of course, I got delayed a week before I went, by that time, the car had been thru enough cycles that it would have been cleared anyway. SO I just don't know.