Brandt VF400JUI/B Dishwasher not emptying on end of cycle

Hi,
Had an integrated Brandt Dishwasher since we moved into the house 6 years ago.

Brandt VF400JUI/B
Type DWA 15431323112
AQ9HBRGBB

Been fine but recently has not fully emptied when completing any washing cycle.
Dishes are clean but often still wet, as presuably the remaining water in the bottom is preventing it fully drying. There is about 1-2cm of clean water in the bottom. Have cleaned out all of the bottom of any debris and have checked for any obstructions in the drain pump.
Had the dishwasher out and checked for any leaks and have checked the drain pipe which is clear. Have disconnected the drain pipe and run this directly into a bucket – still leaves water. Circuit board looks ok, no loose wires etc.
Found a brief instruction manual – not very helpful. Is there anyway you can reset the whole machine? Its as if the drain pump needs to run for about 10-15 seconds more before switching itself off.
I’m thinking curcuit board?

Any ideas?

Thanks