This is a bit of a strange error code as what it is is a pressure related error code.
If the filters are clear then remove the mesh filter and make sure the under side of this is clean as well.
If so then it can be either the pressure sensor in the hose at the bottom or the circulation motor.
To check this you need to strip the dishwasher down and there you will see a hose going from the wash motor to the sump. In there is a pressure sensor. Take it off and give it a good clean out.
Then retry and see what happens. If its still the same then its possibley a fault on the wash motor itself. As in the past ive seen this error code and its turned out to be a faulty wash motor.
So check that out and see what you find and let me know.
THANKYOU WILL TRY THAT OPTION , THIS WASHER HAS HAD VERY LITTLE USE , BE IN TOUCH .
No worries speak soon.