I'm having the same problem,
THe dishwasher repair man came to check our machine yesterday, told me to contact Siemens for as new Circuit board which they would free issue.
Phoned them.
No hope and they insisted on sending one of the their own engineers out to fit it at their rediculas charge level.
As an electronics engineer myself there is less than £30 worth of components on the cirecuit board
John, December 2009