Frigidaire Dishwasher i20 Error Code

Didn't drain completely on Frigidaire dishwashers.

Frigidaire All Frigidaire dishwasher codes

i20

Moderate DIY

Water was left in the tub at the end of a drain. A blocked filter, a pinched or low-mounted drain hose, or a disposer knockout plug that was never removed will all do it.

Compatible models

Frigidaire's support site lists i20 for its dishwashers in general, without naming models.

Also shown as

Frigidaire's manual groups i20 with i40 and iF0 as filter or drain-line restrictions.

Difficulty

Start with the safe checks below; a worn part may need replacing.

How to fix
When to call a pro
Parts
FAQ

Not sure you are reading the code right? See how to read Frigidaire dishwasher codes.

Safety first: unplug the dishwasher (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix Frigidaire i20

Clean the glass trap and filter
Turn off the breaker, take out the bottom rack and lift out the filter assembly. Clear food and glass from the trap and rinse the filter under the tap before you lock it back in.
Check the drain hose height and kinks
The hose needs to loop up at least 32 in (81 cm) above the floor before it drops to the sink drain or disposer. Straighten any kink or crushed section along the way.
Check the disposer knockout plug
If the dishwasher drains into a newly installed disposer, make sure the plastic knockout plug in its dishwasher inlet was punched out. Unplug the disposer or switch off its breaker before you reach in there.
Clear the code
Press and hold Cancel, or cut power for about 3 minutes. Then run a cycle and check the tub is empty at the end.

When to call a technician

If the drain path is clear and i20 keeps returning, the drain pump or its wiring needs a technician.

Parts linked to i20

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

filter assembly
drain hose
air gap
drain pump

Order parts by your full model number so they fit.

Step-by-step guides for this problem

DishwasherDishwasher Not Draining? 7 Fixes to Try Before Calling a Pro
A clogged filter, a garbage disposer that needs clearing (or a new one with its knockout plug still in), a blocked air gap or a kinked drain hose cause most drain problems.

Frequently asked questions

Which Frigidaire models show the i20 code?

Frigidaire's support site lists i20 for its dishwashers in general, without naming models.

Can I fix Frigidaire i20 myself?

Often. The first steps above are safe checks a homeowner can do. If they don't clear i20, the cause is likely a worn part that needs replacing.

Other Frigidaire dishwasher codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked