I have had the same thing happen a couple of times on my '01. I talked to my mechanic (family friend) and he says that the indicator light comes on for emission control reasons. Sometimes caused by a mis-fire (ie. mis-start) or as previously said a loose gas cap. It should go out after 6 or so cold starts. Thats what has happened with mine anyway. If your ride is running well I would give it time and it should go out. Anyone else got any ideas?