We have a 2012 Itaska Suncruises (Ford 53F chasis). About 100 miles ago, I was stopping at a light and heard a load popping sound by the drivers front wheel, like I had kicked up something against the chassis. About 10 seconds later, the ABS light came on and stayed on. Brake system light is out, as it should be. Could see no damage under chassis. Brake fluid and fuses are OK. Vehicle brakes as normal with no noise or pulling, even on hills. Any ideas? I know a computer scan will probably tell the tale but don''t have access to code reader.