What causes the i20 code on a Frigidaire dishwasher?

Clogged filter / drain path: Food debris in the bottom filter and sump. Clean first. Clogged drain hose or air gap: A blockage at the hose, air gap, or disposal inlet.

Frigidaire · Dishwasher Moderate

i20 — Drain Blocked

i20 means the dishwasher cannot drain — water is not leaving the tub. Usually a clogged filter or drain path.

Keep using it?: Yes, with caution
DIY difficulty: Easy
Verified against: owner.frigidaire.com ↗

How to fix it

Clean the bottom filter and sump.
Clear the drain hose and air gap; confirm the disposal knockout plug is removed.
Test the drain pump if it still will not drain.

Why it happens

Typical signs: Standing water in the tub · Cycle stops · i20 on the display

Clogged filter / drain path Food debris in the bottom filter and sump. Clean first.
Clogged drain hose or air gap A blockage at the hose, air gap, or disposal inlet.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Frigidaire Dishwasher Drain Pump Common replacement
Amazon →

Related repair guides

Dishwasher Not Draining — How to Fix Standing Water →

More Frigidaire dishwasher codes

Cd Cd — Door Not Closed / Latched CL CL — Close the door ER ER — General electronic control fault Hot Hot — Water inlet too hot HS HS — Wash Motor Hall Sensor Error i10 i10 — Water Not Detected (Fill)

All Frigidaire codes → All dishwasher codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: owner.frigidaire.com.