I looked it up on line to see what it could be and I ordered a temperature sensor. There are also videos online that show you how to install the temperature sensor. The hardest part was actually moving the stove and unscrewing the back piece. The temp sensor just needed to be unhooked and to remove two screws, switched the piece out within 5 minutes, hooked it up and placed the back panel. I tried the oven and it worked! Saved money and was fairly simple to install.