We had this problem, tried all the fixes, none worked. Our solution ? Hubby took off the skirting around the kitchen units, crawled about on the floor, swore a lot, said we need a plumber, sweated a lot, swore some more, got flat on the floor, swore a bit more, unscrewed the pipe under the sink, got sprayed, more swearing, gave up, disconnected the whole effing thing, moved it across the room and bought me a new dishwasher. This was just after he had dropped the new fridge freezer on his foot and did more swearing. I am not, for those who are thinking it, married to Frank Spencer ;o) I did however, get a brand new dishwasher out of it.
Mrs Devalle, April 2012