Dan for Model Number LDF7774ST Our LG dishwasher started throwing OE error code. I checked drain hose it is clear it has worked fine for 4 years. In checking everything I think I have it narrowed down to a sensor with a impeller on the drain assembly. The part number is 6501DD2001A but not sure how to determine for sure. If you push the two buttons to drain the unit it drains but when you wash Load of dishes it will throw error in cycle and leave water small amount of water in tub. I also checked and cleaned filter that made no difference. Thank you
Answer Dan, Unfortunately there is no test that is showing that you can do for this sensor to see if it is good or bad. Normally this information would be on the tech sheet on the unit. It is likely that this sensor could be the issue that is causing this failure or a control board that is at fault. Read More... Answered by AppliancePartsPros.com | Tuesday, August 21, 2018