Bosch Classixx E25 error. Sensor fault?

Hi. My bosch diswasher is not draining. I have an E25 error message. So far I have:

1: Cleaned the filter.
2: Checked for obstacles.
3: Changed the pump.
4: Changed the operating module.

All of these remedies have failed as when I run the short or long cycle the sump is full of water either during or after the cycle coupled with the E25 error

If I reset the program it does eventually drain and the program will restart. It will not restart if I do not drain the sump via a reset. I have a Bosch Classixx serial number SMS40C02GB

Is there a sensor fault of some sort?

Thanks

Mark