Does anybody know if its necessary to run the blue a/c sensor on the thermostat housing? Would this cause a code(51)? I know code 51 can be tps, but im gettn code 41 and 51. I dont have the blue a/c sensor installed, and wondered if thats why. I know having your a/c on when pulling codes can give you a code 51, but will not using the sensor give you that code as well?