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Frigidaire Dishwasher i40 / iF0 Error Code
Clogged filter or sump on Frigidaire dishwashers.
FrigidaireAll Frigidaire dishwasher codes
Food has built up in the filter or sump enough to choke the flow. It's a cleaning job most of the time.
Compatible models
i40 appears on Frigidaire's general dishwasher code list. iF0 is listed in the Gallery FGID2479SF and Professional FPID2498SF manuals.
Also shown as
The use and care manual lists iF0 with the same meaning (clogged filters or restricted drain line). Frigidaire's support site only covers i40 by name.
Difficulty
Most people can clear this one at home with simple checks.
Not sure you are reading the code right? See how to read Frigidaire dishwasher codes.
How to fix Frigidaire i40 / iF0
Clean out the glass trap
Switch off the breaker, pull the bottom rack and remove the filter. Empty the glass trap, scrub the mesh with a soft brush and wipe out the sump underneath.
Look at the drain hose too
If the filter was only lightly dirty, follow the drain hose for a kink or crushed spot behind the unit or under the sink.
Run it again
Put everything back, restore power and run a normal cycle. If the drain uses a disposer, run the disposer first to clear it.
When to call a technician
Contact service if the code persists after a thorough filter and sump cleaning.
Parts linked to i40 / iF0
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
Order parts by your full model number so they fit.
Step-by-step guides for this problem
- DishwasherDishwasher Not Cleaning Dishes? 9 Causes and Real Fixes
Dirty dishes usually trace back to a clogged filter, spray arm holes plugged with debris, water that isn't hot enough, or loading that blocks the spray.
- DishwasherHow to Clean a Dishwasher Filter (and How Often to Do It)
The filter sits in the floor of the tub under the bottom spray arm.
Frequently asked questions
Which Frigidaire models show the i40 / iF0 code?
i40 appears on Frigidaire's general dishwasher code list. iF0 is listed in the Gallery FGID2479SF and Professional FPID2498SF manuals.
Can I fix Frigidaire i40 / iF0 myself?
Usually, yes. Most i40 / iF0 problems clear with simple checks you can do at home. Start with the first step above: clean out the glass trap.
Other Frigidaire dishwasher codes
- i10Low fill detected
- i20Didn't drain completely
- i30Leak or overflow in the base pan
- i50Drain or wash motor problem
- i60Water heating problem
- iC0Electronic control problem
- PFPower was lost
- CL / CdDoor not latched
- Hd / HOHeating water before washing
- Status lights flashing after drainPossible shorted keypad
Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.