I finally got around to taking the wheel off my car to see where its ABS problem is, and I tracked it down in a couple minutes. There’s an open circuit between one of the ABS sensor wires and the ABS module. What a surprise. I took the car to a mechanic thinking this would be an very easy thing for them to take care of. I assumed there was probably an open circuit somewhere in the system and figured the mechanic could diagnose the problem and put in a new wire, but they were more interested in upselling me. So I’ll probably work on it some more tomorrow. I’m going to have to take out the passenger seat and some trim to run a wire from the back of the car to the front, which I’m not thrilled about. Hopefully this fixes everything. There’s also a problem with the steering angle sensor, which I’m really hoping can be with a good cleaning. I’ll get to that after the ABS problem is solved.