Oven would stop heating after a few minutes of operation

Heat escaping from the top of the over door would overheat the electronics and cause the system to show error codes F1 and F3-1. Error code F3-1 suggests that the oven temperature sensor was bad. I replaced the sensor but that did not stop the problem. Replacing the oven door gasket stop the heat leak and solved the problem. I simply pull the old gasket off the door (it stuck a bit at the bottom but a pair of pliers solved that problem, then push the new gasket into place without any tools. The old gasket was very hard and non-complient where food had spilled on it and baked hard.