Product review (5 stars): Easy fix!
I have an 8 year old Whirlpool Duet Steam washing machine. Last month I started getting the "SUDS/F35" error codes. I did some research and found that the pressure switch was the culprit in my case. I ordered the switch and received it a short time later. My only knock was how it was packaged, it arrived in an envelope with bubble lining, this provided limited protection. I would think a small box would be better suited for shipping delicate items. Luckily my part made it without getting broken during shipping.

Before you install the new pressure switch, read the instructions included with the new switch carefully!! If this switch is an upgrade from the OEM old switch that is being replaced, some new switches require that the connector from the washer will have to have the single plastic guide key on the edge of the connector trimmed off to allow the connector and the new pressure switch to connect properly. You will know this needs to be done if you can't get the connector to clip into the new pressure switch.

I had to trim my connector guide key, I used a pair of pliers and simply grasped the guide key and twisted it off, voila, it connected to the pressure switch.

I have washed several loads of laundry since the switch replacement, no issues, no error codes!