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...

Unplug the washer, and remove the top panel from the cabinet. Next, carefully unplug & reseat each plastic relay end one at a time (for all pink wires), and use electrical tape to keep them making good contact, the problem may be resolved. The door lock assembly is controlled by the relays and their proper contact with the Central Control Unit (CCU). Put cover back on, plug in machine, and select cycle & hit start. This should sent proper signal to door lock mechanism and the door should lock/unlock properly. If it doesnt solve the problem, there is a YouTube video showing how to replace the door lock mechanism itself. Best Wishes.

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!