Could be what your stating.
Here is what happened to us, might help you...but a different vehicle type then yours, the light went off because the abs wire became disconnected at a connection, right above the diff cover. Plugged it back into connector and light went off. I would say double check the abs wire to make sure all connections are connected.
2003 Majestic 23P... Northwest travel machine
2013 Arctic Fox 25W... Wife "doll house" for longer snowbird trips
2001 "The Mighty Dodge"... tow vehicle for "doll house"