I bought the replacement door switch assembly. Had the old one out and new one in place in about 20 minutes. Fired it up, without clothes or soap, and it worked beautifully. Then, I loaded clothes and soap, and the machine threw the same code again. I took the top off the machine, traced the two blue wires to the upper control block, disconnected and reconnected the connector and the machine. Same code. Called AppliancePartsPros. Tech suggested the switch was not the problem, maybe a connector or wire issue. I then traced the other two connector sets of wires to the upper control block, disconnected and reconnected them. Fired up the machine and ran four sets of laundry, without incident.
Thank you AppliancePartsPros,com!