I first watched videos by ApplicancePartsPros (some of the best videos on YouTube!!). Started the repair process by cleaning out the drain filter (pulled out old sock!) and the water inlet valves (removed sand and grit from the screens ... we are on a well!). Still getting error code. Thought it might be the Control Board but decided to replace both the Inlet Valve and the Water Inlet Flow Meter because of the grit in the system, and because I suspected the water flow was a little slow. That worked ... have done 5-6 successful runs since replacing those parts. Our 2005 Whirlpool Duet is now working as good as ever. Couldn't have done it without APP's great parts service and their awesome videos. My wife is very happy (therefore so am I).