What could cause the oven door to go into lock mode on it's own. This occurs when oven is off or when baking (which shuts the oven off). It really does not even lock, just makes the noise that it is trying. I have ran the self cleaning mode a couple of times and it seems to work fine. Before I go through the expense of replacing control boards I was wanting some advice. By the way, all other functions work and no error codes.

Thanks,

Greg