What's wrong with my car's traction control !!?

ok..so...my traction control goes oFF after driving for a little bit , took the car down to Sandone tire for them to check it out and after a while the mechanic put it on the computer did all sorts of tests it came out negative , like nothing is wrong with it , and the light still on telling me the traction control is OFF,,,,,what's wrong with it ????