Oven will not heat up, but clock is OK

I have a Kenmore oven model 9114012990. The clock works fine. When I push the bake or broil function it looks like it is working, but the oven will not heat up, and then it goes back to the clock in about 2 to 3 minutes. I think it is the clock oven controler. Does anyone know if I am correct? I also can’t find the part. It might be discontinued.

Thanks