Diplomat ADP8332 F4 Fault?

I have a problem with a Diplomat ADP8332 F4 Fault, firstly got the FA alarm showing, so I switched off the power, removed the front lower panel found no visible problems. I carefully lowered the dishwasher onto its front and removed the pump and pressure sensor and thoroughly cleaned them out. After replacing the parts I poured water into the bottom of the dishwashers and powerd back up to trial run. The water pump ran and removed the excess water from the bottom and the dishwasher seems to run but now I get the F4 alarm but the spay nozzles dont seem to be working or washing. The drainage and water hoses are fine and not kinked??
Any one help!!!