Frigidaire Dishwasher UO Error Code — Meaning & Repair Cost (2026)
Vent open — vent plunger didn't close. Below: the most likely causes, and what the matching repair costs — Estimated national ranges with a metro localizer. Reviewed July 2026.
What UO means
Vent open — vent plunger didn't close.
Likely causes, most common first
- A stuck/failed vent assembly or vent-wax motor, or wiring
Also applies to Electrolux — these brands share the same control platform, so the code and its causes read the same.
Base: ApplianceRepairService.ca fault-code library · Code meaning & causes · Reviewed July 2026
What it usually costs to fix Estimated
UO on a Frigidaire dishwasher resolves to the dishwasher not drying dishes problem. Frigidaire parts typically run ×0.9 against the mainstream baseline (published rates from 1 local repair company), and the ranges below already include it.
$100–$290 national estimate to fix the fault behind UO (Frigidaire parts ×0.9). Enter a ZIP to localize.
| Most common repair | Typical total | DIY? |
|---|---|---|
| Heating element replacement | $150–$290 | DIY possible |
| High-limit thermostat / vent-fan replacement | $100–$250 | DIY possible |
Plus a typical service-call / diagnostic fee of $75–$150, often credited toward the repair.
Pick a quality tier for a class-typical estimate, or a specific brand to override it (brand adjusts the parts portion only). Enter a ZIP or Canadian postal code to localize to your metro's labor costs. Everything updates without a page reload; no data leaves your browser except the shard lookup.
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · National base range (BLS OEWS May 2025 + BEA RPP 2024) · Reviewed July 2026 · Estimated
Codes are universal — your location changes the repair price, never the code's meaning. See the methodology for the exact localization formula and sources.
Reviewed by a Red-Seal certified appliance technician.