Iím having what sounds like the exact same problem with that washer and it started a little over a week ago. I havenít pulled it apart yet to run through the diagnostics but am hoping to over the weekend. Have you had any luck figuring this out since your post?
Mine wonít start any cycle, it just get stuck at the sensing phase. The door latch doesnít engage, but when I run the diagnostic mode the latch does engage and everything tests ok except the drum never turns. Same thing about no error codes afterwards too.
The only thing I can add at this point is that according to the tech manual, if the acu power checks out, and the motor circuit windings test ok, but the motor still doesnít turn when you retest in diagnostic mode, the manual says to replace the acu. Will follow up after Iím able to run the electrical tests.