FixByModel
iF0

Frigidaire iF0: Water flow / filter restriction

The dishwasher sensed restricted water flow, in the same family as the i20/i40 drain codes. It is typically a clogged filter or restricted drain rather than a failed part.

DIY fix

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Dirty or clogged filter and sump
  2. Kinked or blocked drain hose
  3. Food buildup restricting the drain path
  4. Blocked air gap (if fitted)
  5. Failing drain pump
Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Clean the filterRemove and rinse the bottom filter assembly and clear the sump of trapped debris.
2Check the drain pathStraighten and clear the drain hose and clean the disposer connection or air gap.
3Reset the unitPress Cancel or cut power briefly to clear the code, then run a rinse cycle.
4Confirm flowVerify water fills and drains normally through the cycle.
5EscalateIf iF0 recurs after cleaning, have the drain pump and flow sensing inspected.

Still showing iF0?

If you’ve worked through every step and iF0 keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

Frigidaire dishwashers. Frigidaire and Frigidaire Gallery dishwashers with i-series digital fault codes.

FAQ

What does Frigidaire iF0 mean?

Water flow / filter restriction. The dishwasher sensed restricted water flow, in the same family as the i20/i40 drain codes. It is typically a clogged filter or restricted drain rather than a failed part.

What causes Frigidaire iF0?

The most likely cause is dirty or clogged filter and sump. Other causes include Kinked or blocked drain hose; Food buildup restricting the drain path; Blocked air gap (if fitted); Failing drain pump.

Can I fix Frigidaire iF0 myself?

Usually yes. Start by working through the steps above, beginning with: remove and rinse the bottom filter assembly and clear the sump of trapped debris.