Written by
Hannah Ostrowski Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codei40
ApplianceDishwasher
What i40 reports
A clogged filter or sump is what i40 stands for. The display shows it once food soils have collected and built up in the sump, and the guide names that build-up as the cause.
Do this
Take out the glass trap and the filter, then clean them.
Start the dishwasher once more.
When i40 comes back, the guide says to reach out to support for further help.
Which dishwashers
Frigidaire lists i40 among the current codes and alarms in its general owner guide for dishwashers. The guide does not tie it to any one named series, so it is not limited to a single model line.
Do not confuse it with
i20: the unit did not drain completely, and its checks also include the filters and sump.
CL: the door sits open instead of closed and latched.
Dishwasher repair in San Francisco
If cleaning does not remove i40, bring it to Frigidaire dishwasher repair or call (415) 319-6371 from the Bay Area. Mention the model number and that the trap and filter were already cleaned.
Model compatibility: Frigidaire reuses codes across series and model years, so i40 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
i40 signals a clogged filter or sump caused by built-up food soils.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Frigidaire appliance?
Book a specialist visit for a clear estimate and approval before any repair.
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