Frigidaire Dishwasher Display Code: ERR u0

[FONT=Arial]I have an ERR uo display code. According to the Service Data sheet it is a “Vent will not close” error… I have run the dishwasher through the Water/Service Test and it fails on step 8 with a Detection Error code of RA. Components verified during step 8 Drain Motor and Fan. I believe that I have an issue with the vent Assembly/blower unit part number 154562802.. How do I test the vent assembly unit to verify that it is the defective part and not something wrong with the Electronic Control Board?[/FONT]

[FONT=Arial]My dishwasher does work fine as long as I don’t use the HI-TEMP or SANTITIZE options which will requires fan venting.[/FONT]

Anyone out there know to fix this?