I've got a Kenmore Elite washer(model 110.45872400) with a troubling F02 error. I've replaced the drain pump, checked the hoses(all clear) and blown through the pressure switch valve hose(clear as well).

It appears to drain the water out, but then just keeps running and eventually displays the F02 error. I'm thinking it's something with the water level sensor. Is there a way to test the water pressure switch?

I remove the tube from the pressure switch and the pressure switch air trap. That hose is clear. If I try to blow through it when it's attached to the air trap, I can't blow through it. Is that a problem?

Any other ideas?

Thanks!