I had an intermittant E05 fault which seems to have been cured by changing the NTC temp sensor. It only cost around £10 and was dead easy to change.Take the back off the machine and just two screws hold it in (two orange wires go to the sensor). I did also find that the two wires onto the sensor were a very poor connection and one actually come off its terminal, whilst changing the sensor. I changed the two 6.3mm female terminals as well. Washers been working fine now for 2 weeks.
paul, derbyshire, June 2011