Product review (5 stars): Fixed F33 error on Duet washer
Amazon (and Google) to the rescue!!

We have a Whirlpool Duet (circa 2006) washer that decided to quit on a Sunday afternoon. It was showing an F33 code, which if you followed the literature hidden inside the washer, would lead you to believe it was a water inlet error. But thanks to Google and all the people that have already encountered this, it was unanimous that it was a drain pump issue, which seems to coincide with the fact my load of laundry was near completion, just water logged.

The problem is, it could either be a computer control issue or the pump. After disconnecting the wire harness to the pump and confirming 110 plus voltage when the computer commanded the pump to turn on, I was pretty confident I could purchase this pump and be on my way. The way to test this is with a volt meter and the washer turned on to the drain/spin cycle.

MUCH Cheaper than any other online source, it was Amazon to save the day. If you order with Amazon being the seller you can rest assured the replacement will be original.  By Tuesday evening I was up and running again. Thank goodness!! The install seems to vary by model so no point in listing it here. Good luck!!