We've had a KitchenAid Model KDTE234GPS0 dishwasher for a couple of years. Best dishwasher we've ever owned, very quiet. Then we started noticing detergent powder left behind, dishes not as clean, finally not filling and washing and dirty water getting baked in the bottom. Checked for error codes and got "4-3", indicting a bad motor pump assembly. Ordered and replaced this and it now works fine, but I still get the same error code when I check. How do I erase it?