I have a GE dishwasher GSD2200g03. Has worked well for years. Now getting a C1, then C2 error, then shutdown. Indicates a drain clog. Checked the drain hose, no clog. I put water in the washer, it drains fine. There is no air valve. Float checked, it works fine. Cleaned the trap at the back, there was some buildup which I cleaned, no help. I did not check the entire length of the input water hose, but the visible part is totally clean. Also did the usual shut-off of the power, waited 1/2 hour, turned it on again, no help.

What might be causing this? Might there be a way to bypass this?:confused: