Abs lights on with 4 codes.

I’d try pushing the two sensors mentioned in making sure they’re contacting the tone rings. They probably are, but sometimes can slip out. Sometimes it’s caused by a loose wheel end. That’s free doesn’t cost anything. Chances are a wire is damaged. Visually check each sensor for a damaged wire. Hopefully they have a short wire from the sensor, and a longer extension wire going to the ecu. Usually the wires got a break in it. Often it can’t be seen. You can buy an extension wire long enough to reach from the ecu to every sensor. Try replacing the wire. Must pull the Trailer about 5 mph to clear an active code Any remaining codes will still be active, so the light won’t go off till every codes fixed. You probably need a new wire for each sensor mentioned. You can buy 2 wires and only open one. Try it on one, and if it doesn’t fix it, try it on the other. Worst case scenario is you’ll have an extra extension wire for future diagnostic’s if you ever need one. They’re about $30. If your sensors have one long wire, instead of a short wire and extension wire. You’ll need to pull the wheels and drum off to replace the whole sensor. If that’s the case, I’d replace it with a short wire sensor and an extension, since the sensor itself is just a magnet, never goes bad, it’s always a wire.

 

And if you are on dirt lots a bit, simple piece of mud between the tone ring and sensor can do it too.