Persistent F3 error on GE Profile Oven

My GE Profile Oven began giving error code F3 about 30 mins after setting the oven temp. I checked the oven temperature sensor and is shows 1000 ohms of resistance which I understand means that it is working properly. A previous post with the same problem says that the next step would be to check the oven controller. Is this correct for my model? How can I check if it is operating properly? What is the correct part number that I should order?