 But then later down the road, other things will happen, like the ABS may engage when it shouldn't. Like as you come to a stop sign, it'll come on just before you stop because one wheel drops out faster than the other as far as the wheel speed sensor goes. Or going down the highway, it loses one of the wheel speed sensors just for a second. At least the computer loses that signal. Even though the sensor may be good, the computer may not be reading it.