Everything seems to be working now.
I don't think I was clear earlier, but this model is an electric convection oven, with a gas cooktop.
Anyway, I took out the control board to look for any bad capacitors or chips that looked damaged and it looked fine. I also unplugged the connectors to the ignitor module for the cooktop and plugged it back up. when I powered the range up, the error code was gone from the display and the oven worked. Also, all 4 ignitors were working instead of just the two on the right. But I still had a gas flow problem. I was going to check to see if there was gas flow coming in to the range. So I turned off the gas valve behind the stove and tried to remove the flexible hose from the regulator but it wouldn't budge. When I turned the gas valve back on, suddenly there was plenty of gas coming out and the cooktop works fine. I can't think of why it would work before when I didn't do anything but shut off the valve and then open up the valve. I traced the gas line and none of it was pinched or anything. Any ideas? Could the regulator be messing up?
Also, I can't seem to find any of the Frigidaire manuals that are even close the to range I have. I have looked at the electric freestanding manuals but none of them resemble mine at all. I think mine is about 10 years old.