Hi Jennie,
I have the same model as you with an E3 message showing, but I have learned that the sump under the cabin fills with water creating program errors. Try tilting your dishwasher towards you at 45 degrees to empty sump (get ready with mop and bucket!!) This should get it going again. However, mine is now showing the E3 message and stops after about an hour. I haven't tried it with crockery but I don't think its right yet. Good luck! Matt.
Matt in York, December 2005