Could be an intermittent ground issue. Either ground to the vehicle or individual wheel magnet grounds.
Simple solution to just get you on the road, first try turning the gain all the way down although I don’t really think that will work.
If it doesn’t, disconnect the power wire to the brakes, at the trailer plug or junction box on the tongue and drive carefully.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold