Frigidaire Dishwasher Error Code uo
Vent open error — drying vent failed to close
Frigidaire dishwashers dry with a motorized vent that opens to release moist air. The 'uo' code means the control sees the vent stuck open when it should be closed — wash performance continues but drying and heat retention suffer, and the cycle flags the fault. A failed vent assembly or wax motor is the usual cause.
What Does Error Code uo Mean on a Frigidaire Dishwasher?
Vent open error — drying vent failed to close.
Frigidaire dishwashers dry with a motorized vent that opens to release moist air. The 'uo' code means the control sees the vent stuck open when it should be closed — wash performance continues but drying and heat retention suffer, and the cycle flags the fault. A failed vent assembly or wax motor is the usual cause.
What Causes Error Code uo?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Vent/wax motor assembly failure 55% of cases
- 2 Debris or grease jamming the vent flap 30% of cases
- 3 Wiring fault to the vent assembly 15% of cases
How to Fix Frigidaire Dishwasher Error Code uo
- 1
Power-cycle
Switch the breaker off for 60 seconds — if the vent was momentarily stuck, the reset clears it.
- 2
Inspect the vent
Find the vent on the inner door (top corner on most models), and check the flap for grease or detergent buildup keeping it open.
- 3
Replace the vent assembly
The vent and its wax-motor actuator replace as a unit from the inner door panel.
🔩 Frigidaire vent assembly ($25–$60)⚠️ Switch off the breaker before removing the inner door screws.
How to Reset Error Code uo
Switch the breaker off for 60 seconds and run a short cycle. The code clears once the control sees the vent close properly.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
Did this guide fix your appliance?
✓ Thanks — your feedback helps us improve this guide for the next person.
Thanks for letting us know. If the steps above didn't work, see when to call a professional.
When to Call a Professional
The dishwasher remains usable with 'uo' showing, so there's no urgency — but if dishes come out wet and the code persists after a new vent assembly, have the control board checked.
Related Error Codes
Find Replacement Parts
Use these links to find the exact replacement parts for your Frigidaire Dishwasher:
External links — ApplianceErrors.com is not affiliated with these retailers.
More Frigidaire Dishwasher Error Codes
Frequently Asked Questions
What does error code uo mean on a Frigidaire Dishwasher? +
How do I fix error code uo on my Frigidaire Dishwasher? +
How do I clear or reset error code uo? +
Is error code uo serious? +
Sources & References
- • Frigidaire Support — official manufacturer documentation
- • Our editorial & verification policy
Content verified against manufacturer service documentation. Last verified: June 11, 2026.