I have an LG WM2277HW washer that's driving me crazy. It's throwing an OE error which relates to draining problems. The washer will run the wash cycle and then will not drain allowing it to rinse and spin. So far I have gone through and removed every obstruction in the drain system. All hoses have been removed, inspected and I am sure they are free of debris. I have replaced the drain pump as well and the code persists. The door locks/unlocks based on the water level as it is supposed to. The filter is free of debris as well.

There is a circulation pump on the unit, but in all my research this does not appear on it's face to affect the draining of the unit. For the life of me, I cannot figure this out. I'm starting to wonder if the PCB is bad, but at $140+, I don't want to shotgun that part if it's not a possible problem.

Any ideas would be greatly appreciated. Thanks!