Don't have ABS myself, but my search so far has turned up nothing definitive. At least your brakes still work. A faulty something in the ABS module or pick up sensor in the notched wheel ring should not affect your normal braking.
Thanks for the feedback. I really haven't noticed the light while riding.
A few days ago I was running the bike to charge the battery, and that's when I noticed the light staying on. I wasn't aware of the 6 miles per hour thing.
Thanks, I'll check that out when the weather improves.