I just installed a 5in straight pipe. Got about 150 miles or so on it with no problems at all until tonight. When I took the old stuff off I unplugged the sensors and zip tied them up outta the way, same with the fuel lines. Tonight I cranked it up and the light came on. Runs normal, no problems. Hooked up the PPE to read the codes and it says none found, cleared it anyways, no more light. Crank back up and the light comes right back on. Any ideas? Do I need to plug the sensors back in?