Before you buy parts etc., there are easy fixes that may help. Are you getting an f dL code? If yes, you probably dont need to replace the CCU. I found video on youtube showing how to remove top portion of cabinet. I unplugged washer, remove top of cabinet, and carefully unplugged each one of the plastic clips for all the pink wires (one at a time) and plugged them back in. This worked temporarily! I read a post online that claimed this problem was a design flaw/vibration causes the plastic seats to become loose and not make proper connection. I got some electrical tape, cut a long strip for each relay seat, and (sticky side facing up) carefully placed the middle portion of the strip under the relay seat, pressed to ensure good contact, and brought each end up (with a little tension to keep plastic seat in place)/crisscrossing so ends would stick to top of CCU and back of top cabinet. Washer locks door and runs like new! I didnt need CCU or new door lock mechanism. Thank you to everyone that contributed to the online posts. Saved hundreds of $ with this simple easy fix!
1) Cut long strips of electrical tape, approximately 8" long for each plastic relay seat.
2) Carefully slide a piece of electrical tape (sticky side up) under each plastic relay seat, and press center of tape strip to bottom of plastic seat.
3) With a little tension (to ensure contact with CCU is maintained) bring each end up/crisscrossing ends, and stick to top of CCU/overlap back of washer cabinet.
4) Put cabinet cover back on, plug in washer, and select cycle/press start.