Hi, welcome to Just answer
How old is it ?
do you hear a hum sound from the bottom of the unit ?
OK, E 6 error indicates Irregularity in the water pressure
you will have to pull it out and then lay it on its left
then with the dishwasher unplugged
clean the drain pump and sump from the bottom of the unit
also clean the drain hose completely
yes you can locate the float as well, and make sure there is no leaks
after cleaning the problem should be solved
if the error returns
then inspect the motor
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