Fault showed up as a bad front left sensor. Shop swapped the fronts and followed to the right side. Replaced the sensor and on the way home from the shop abs fault reoccurred. Shop replaced the sensor on the right and the same thing happened. I have bought a new sensor and did the same. I ordered a new connector to try that, but not confident it will fix the issue.
Senor ring looks cruddy from peering down the hole into the hub. I have reset the system with an advanced OBD2 tool.

I am at a loss. Any help? This car has been nothing but problems and expensive repairs.

 

Can you get a picture of how cruddy the sensor ring looks? I don't know what that looks like on the front, I imagine some sort of tone ring looking thing, like a gear of sorts. If not, ignore the rest. Often, the abs sensor wants to see the signal go high/low as the teeth rotate in front of it. Can't say I'm right here, because general crud isn't ferrous to disrupt the on/off pulse, but maybe enough crud can distort that signal timing.

EDIT: I think it was on a Jeep, someone got hammer happy/prybar happy on another component and accidentally damaged the sensor ring, enough metal was deformed in the right place to cause AB faults.

 

What brand sensor did you use ...