Frigidaire Dishwasher i20 error code
The dishwasher found clogged filters or a restricted drain line — water can't pump out of the tub properly. This is one of the most common dishwasher faults and usually comes down to a blockage you can clear yourself.
Also shown as: i40, iF0
Last updated: September 30, 2026
What causes the i20 error?
- Food-clogged filters or sump area
- Pinched or blocked drain hose
- Garbage disposer knockout plug not removed (new installs)
- Debris in the drain path
How to fix Frigidaire i20 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Clean the filters and sump
Remove the lower rack, take out both filters, and rinse them clean. Scoop any debris from the sump area underneath. - Check the drain hose
Make sure the drain hose isn't pinched or blocked. If it connects to a garbage disposer, confirm the knockout plug was removed. - Reset and retry
Press cancel or turn power off at the breaker for 5 minutes, then run the dishwasher again.
When to call a technician
- Water still won't drain after cleaning everything
- Drain pump runs but moves no water
Frequently asked questions
What's the difference between i20, i40, and iF0?
They all point to the same problem — restricted drainage. Frigidaire groups them together in the manual with the same fix.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.
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