ABS

 
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ABS Brakes Problems

ABS Traction Control lights stay on. Brakes light in dashboard also stay on brakes work just fine
There are sensors on all for hubs to tell if your brakes are worn out. I would either assume that you snagged something on the road that damaged one of these sensors(usually just a little wire that seems out of place as there are no electronics on the hubs), or you have a high mileage, or heavy braking issue. If you know that that is not the case then I would try making sure that the parking brake is not engaged. Beyond this you have a failure within the ABS control that has to be repaired by a certified tech. You should ask them to scan the car you want to copy down the codes and google them with the make of your car, they might tell you the exact issue.