Control panel replaced but still getting F2:E0

I was getting an error code of F2:E0. Tried to clean connector, reset ect. Finally replaced the control panel today and I am still getting the code. Turn power on within 30s error code. Clear, start oven within 30s get error code. If I clear and do not start the oven the clock operates and no error code until I start the oven. I cleaned the connector pins and the ribbon cable. The main board was replaced about 4 years ago. Any help would be appreciated.

Thanks
Neal