When my ABS light came on my 06 PSD it was an EZ fix. On the top of the diff mine had a plug with a wire connected to it, remove wire remove plug wipe off sender tip with a rag then replace. This fixed mine.
2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One