sears/kenmore electric range

My wife used the oven the other night and turned it after she was done using it. She later heard the oven beeping and found the error code F1 flashing and the bottom element red hot. She pressed the cancel button again, it did nothing. We unpluged the range, waited a few minutes and replugged the range. The bottom element immediately came on. I waited to see what the oven would do and found that it got very hot until the F1 errorcode came back on. The only way to keep the bottom element from coming on is to keep the oven unplugged! I found the error code descriptions and it says that F1 is the oven control failure. Is there anything else possibly wrong and what do I need to do to fix it?
thanks,
Steve