Product review (5 stars): Fixed Frigidaire Dishwasher Error Code uf
Fixed my dishwasher when error code uf indicated problem with vent fan. To replace this you need to slide the whole dishwasher out from under the counter top. Reach inside the dishwasher to the top back right corner and unscrew the plastic ring that holds the vent assembly in place. Unplug connector and install the new part. The new part does not include the plastic ring that holds it in place, so don't throw anything away until the new part is installed and working.

Note that part numbers have changed in the last few years so I had to do some research on other sites to verify that this would fit my dishwasher.