Appliance Repair Questions? Ask a Technician for Answers ASAP
If your wife reset the breaker and it ran, but the error has repeated, that does sound more like a control issue rather than a door lock switch issue. To test the door switch, you remove the lower screws on the inner door liner, pull down on the outer door panel and it'll come off. Then you need to remove the remaining screws. You'll need a multimeter to test the switches. Maybe a friend or neighbor can help you with the testing if you're unsure. To test for continuity, you'd pull the wires off the switches, close the door and place your meter on Ω (ohms) and it should read 0 -1 ohm. The same reading as if you'd place your meter leads together. I'm leaning towards the board as the suspect, but definitely double check those switches as it'd be cheaper.
The control board is part numberNNN-NN-NNNNand MSRP is $106.02