ABS Light On

It just tells the computer when to activate the anti lock brakes. Hasn't affected driving at all

 

Have you checked the resistance across the sensor?

Maybe it's just a tiny fleck of metal causing it to read faulty.

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I haven't yet. When I pulled it I cleaned the sensor and the plug was still good and dry. Everything I've read says that the rear sensor goes out pretty often.

 

Had a shop pull the code. It's the rear sensor.