Why do people ask questions like this but don't put details of what make & model machine they have? There are so many different machines. Usually de means door error. That is door is open or lid is seen to be open. Usually caused by a faulty lid switch. It may mean something else depends on what machine you have.
Lincoln Appliance NZ
May 2012
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix washing machines.