This is a common problem with your unit. One of the two lid switches is not sending the proper signal to the controls to let it know it locked. There are two on your unit and if one fails, the code will pop up. Here is the breakdown. The parts are number 29 and 32.
With all of that said, you will need to replace the door lock on the left hand side because it is sending the wrong information to the control. The part number is XXXXX and it costs around 54 dollars. Let me know if you have anymore questions.
Will you allow me to go buy the part tomorrow (I already went and looked at one at reliable appliance parts in portland OR it will cost me $53 and change) then install it and make sure it fixes the problem before I accept? I have no problem paying the $18, I just want to make sure that the washer is going to work before we close out this session for good.