---
title: "Frigidaire-built Kenmore dishwasher error code i40"
description: "Frigidaire-built Kenmore dishwasher error code i40 — frigidaire wrote this code, not Kenmore."
url: "https://kenmoremiami.support/error-codes/frigidaire-dishwasher-i40/"
date_modified: "2026-09-01"
Appliance type: "Dishwashers"
---


# Frigidaire-built Kenmore dishwasher error code i40

### Whose code this actually is

Kenmore did not write i40, because Kenmore has never built an appliance. This one is Frigidaire’s, and it appears on the dishwasher that Frigidaire built and Sears sold under the Kenmore badge. Whirlpool, Frigidaire and Bosch all built dishwashers for this badge, and their numbering overlaps enough to be convincing while meaning entirely different things.

### What it means

Frigidaire's own wording: a clogged filter or sump, from food soils building up in the sump.

### Which Kenmore models can raise it

The Kenmore dishwasher whose model number begins 587 — the three digits before the period on the rating plate. Those digits are Frigidaire’s, which is why Frigidaire’s table is the one that applies to i40 and no other manufacturer’s does.

### Worth trying yourself, in this order

- Pull the filter and wash it. On most of these it lifts out in one piece.
- It is a maintenance item rather than a repair, and it is the most preventable code on the machine.

### Where this usually goes

The job this most often becomes is [diagnostic visit](/services/diagnostic-visit/), and that page carries a starting figure and the reasons that move it. A Kenmore dishwasher on this water scales its heater and its spray arms faster than the manual assumes, so codes about temperature and wash performance are read here with the supply in mind first. Photograph the display before you cut the power: a reset clears i40, and on a Kenmore the characters plus three digits off the plate are most of the diagnosis.

### Where this meaning came from

Frigidaire’s own documentation: *Dishwasher Error Codes and Alarms Guide, Frigidaire owner support*. Kenmore publishes none of its own, which is why every entry on this site names the manufacturer’s document instead.

What this one means

Whose code this actually is

Kenmore did not write i40, because Kenmore has never built an appliance. This one is Frigidaire’s, and it appears on the dishwasher that Frigidaire built and Sears sold under the Kenmore badge. Whirlpool, Frigidaire and Bosch all built dishwashers for this badge, and their numbering overlaps enough to be convincing while meaning entirely different things.

What it means

Frigidaire's own wording: a clogged filter or sump, from food soils building up in the sump.

Which Kenmore models can raise it

The Kenmore dishwasher whose model number begins 587 — the three digits before the period on the rating plate. Those digits are Frigidaire’s, which is why Frigidaire’s table is the one that applies to i40 and no other manufacturer’s does.

Worth trying yourself, in this order

Pull the filter and wash it. On most of these it lifts out in one piece.

It is a maintenance item rather than a repair, and it is the most preventable code on the machine.

Where this usually goes

The job this most often becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. A Kenmore dishwasher on this water scales its heater and its spray arms faster than the manual assumes, so codes about temperature and wash performance are read here with the supply in mind first. Photograph the display before you cut the power: a reset clears i40, and on a Kenmore the characters plus three digits off the plate are most of the diagnosis.

Where this meaning came from

Frigidaire’s own documentation: Dishwasher Error Codes and Alarms Guide, Frigidaire owner support. Kenmore publishes none of its own, which is why every entry on this site names the manufacturer’s document instead.

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