Another issue I might have is some wires that flopped down and got heated up pretty badly on the exhuast. I pulled up the slack and zip tied it tight and up and away from the manifold. I'll assume that it's still a good sensor and move on to the next problem area. I can check the codes and the live data that streams from the code checking computers. They show live data of how the fuel mixture is looking and that did show me that the sensors were functioning.