I get a code "E-25" when I try to start a load of dishes. Checked the user manual and it does not describe the trouble codes. Does anyone know what this means? Am I going to have to wash these dishes by hand?

There is no way to know without a model number because they change the codes.

Most Kenmore Dishwashers fault codes mean that E-25 means that the drain is stopped up or the pump cover is off. You need to check the pump and drain line.