UO Error Code
📋 What Does UO Mean?
Vent Open Error — the vent assembly that releases steam is stuck open.
🔍 Common Causes
- 1Vent assembly stuck open mechanically
- 2Wax motor in vent assembly has failed
- 3Control board issue
📞 When to Call a Pro
Vent assembly wax motor replacement is usually required.
🔧 DIY Fix Steps
- 1Run a complete cycle to see if it self-corrects
- 2Unplug machine for 5 minutes to reset
- 3Inspect the vent opening (top of door on many models) for obstructions
Frequently Asked Questions
What does UO mean on a Frigidaire dishwasher?
Vent Open Error — the vent assembly that releases steam is stuck open.
Can I fix UO myself?
Yes, in many cases. Start with: run a complete cycle to see if it self-corrects If that does not resolve it, vent assembly wax motor replacement is usually required.
How much does it cost to repair error UO?
Estimated repair cost: $80–$200. This varies by region and technician.
Tools That Help With This Diagnosis
Basic troubleshooting tools grouped separately from the actual error-code explanation.
Multimeters
Useful for basic electrical checks when the repair path calls for it and the unit is safely isolated.
Driver sets
Useful when the first obstacle is simply reaching the part or hose involved.
Cleanup tools
Useful for drain and leak faults where standing water hides the problem.
Related Pages
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