o20Serious
Frigidaire Dishwasher o20 Error Code
Water has overflowed from the drain area, triggering the flood switch. This indicates a serious drainage issue.
Common causes
- Blocked drain hose or garbage disposer connection
- Defective drain pump unable to expel water
- Clogged sump pump or air gap
How to fix it
- Unplug dishwasher immediately and remove standing water manually.
- Clear any visible blockages in the drain hose and air gap.
- Check for debris in the sump pump area.
⚠ When to call a pro: Call a technician if error persists after clearing obvious clogs to avoid water damage.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.