I got the OE error too. Pulled off the drain hose where it enters the household plumbing and turned on the dishwasher on to drain.....worked perfectly. The problem was not with the dishwasher, the plugged drain was in the household plumbing. Used an air compressor to break the clog free, then pumped some water into the pipe and quickly blew more air into it with the compressor so that the pressurized water could push out any clog remnants. Everything is working perfectly, hopefully it'll be good for another 5 years!