IDF125 Indesit dishwasher not draining. Lighs 1& 2 flashing

Hi, I’m after some advice. I have an IDF125. Last week it decided to stop draining. I have also noticed that it doesn’t pump out at the beginning of the cycle either. It fills and heats as per normal. Actions so far include removing the drain pump and checking for foreign bodies, bench testing the pump and replugging cables from pump to conrol board. No foreign objects found, impellor runs happily on the bench and no obvious cable issue found.

It suggests to me that the circuit control board has malfunctioned but before I attempt to change it ( which may not be worth it financially!) is there anything else that might cause the pump not to run?

With thanks