Hi, the problem is a Signal Switch Malfunction. It has to do with the power switch and the pressure switch from what I have been able to find out. You will probably have to change the switch.
Another way to get rid of the code temporarily is to open the machine. Let it cool off by washing the lid and pulling the pan inster out of the base and let that cool as well. Then unplug the machine and basically start all over. The error will go away after some time.