 Unless the module's bad. Like you said earlier. But you can scan it and see what the codes say, if it says there's a pressure sensor out. And that's going to lead you to the right place to look. Because if it says everything's fine, and the pressure feels good, but the light's on and everything else is fine, and it's not the parking brake switch from pushing that parking brake pedal down. Yeah, and those, the parking brake pedals, the back cables can stick and not pull the cable all the way up, because the pedal may be all the way up.