ABS/LOW TRAC/BRAKE lights
 

Recently I got my rotors turned, disconnected the battery to work on my fuel pump, reconnected the battery and cleaned my car- then noticed my ABS INOP light was on. When I pull my parking brake the brake light comes on (as it should) but the LOW TRAC light starts flashing when I do. When I disengage the brake the LOW TRAC light turns off but the ABS INOP light burns solid still. I have enough brake fluid and yes my third brake light works. Checked the ABS relay and it looks to be in good condition. I’m going to be cleaning my wheel speed sensors today but if anyone has any experience or advice with this kind of problem (I know it’s a common one) please let me know

The first thing I would check is to make sure all the wheel speed sensors are plugged in and the wires are all in good condition.

Did you turn the inside of the rear rotors? (The drum section where the parking brake engages?) If so, the parking brake would also need to be re-adjusted.

Im gonna assume its a 4 channel system. Its likely the rear sensors, ive dealt with this before... they dont male new replacements anywhere and if you can find them they are a fortune...

Did you ever figure out what was going on? My brake and abs inop light came on today as well, car feels fine. I'll have to check it out over the weekend

If you can scan the car it will give you the codes you need to check. Mine showed 3 codes, all related, but the issue was the right rear wheel speed sensor. I removed the sensor and it was covered with metal shavings... they are magnets after all. Not sure why I had so much metal shavings on that sensor, problem for another day. I cleaned it, cleared the code and it seems problem solved.