Proper maintenance and cleaning can help you prevent the DE code from recurring. For starters, clean your washing machine regularly to prevent dirt from accumulating around the door gasket.  Start practicing good laundry habits as well. Empty the pockets of your laundry before putting them inside the washer to prevent metallic objects like coins or hairpins from getting caught in the door gasket. Additionally, avoid washing items with heavy metal objects, such as large buckles and buttons to prevent damage to the gasket.