Replacing a faulty RTD sensor in your Traeger pellet grill involves disconnecting the wiring terminals, unscrewing the RTD from the grill body, and inserting the new RTD probe. Be sure the new RTD matches your Traeger model. Securely reconnect wires and terminals to the corresponding letter assignments—test resistance with a multimeter to confirm proper connectivity. Finish by calibrating the new RTD sensor according to Traeger's instructions. Correct installation ensures accurate temperature regulation.