Which part is usually at fault for Frigidaire error I40?

The most commonly implicated component is the filter and sump.

What is the first thing to try for Frigidaire error I40?

Occurs when food soils have built up in the sump. Try cleaning out the your glass trap and filter and re-run the unit.

Error I40 Degraded US market

I40 on a Frigidaire dishwasher usually means: The filter or sump is clogged. On a Frigidaire Dishwasher, code I40 points to the filter and sump.

Fix it fast: Manufacturer troubleshooting steps. Full ranked steps below.

Manufacturer source Updated Oct 17, 2026 View source

Try these in order. Stop when the code clears.

1 Manufacturer troubleshooting steps
DIY
- Occurs when food soils have built up in the sump.
- Try cleaning out the your glass trap and filter and re-run the unit.
Source

The unit did not drain completely. On a Frigidaire Dishwasher, code I20 points to the drain pump.

A power loss occurred. On a Frigidaire Dishwasher, code PF points to the control board.

Have a different code? Look it up instantly.