Dishwasher fills but will not start. I enter the self test program by holding down the power scrub and regular wash buttons. Auto wash is lit, regular wash flashes and P0 in display. I press power scrub and regular wash once more to enter program and the auto wash and regular wash flash. I press the two flashing buttons, C4 is displayed and the dishwasher seems to begin the testing. It fills but then E1 is displayed and the the power wash and auto wash flash. It will go not further.
I have checked most all of the sensors, switch and circulation motor with the ohm meter. All appear to check out fine.
At this point I don't know what is wrong with it.