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Error Code

Kenmore Cooktop 40 Error Code

Plain-language guidance for Kenmore code 40 on Cooktop — symptoms, safe checks, and when to call a technician.

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At a glance

Error code overview

A plain-language snapshot of 40 for Kenmore Cooktop — confirm the model series before you act.

Lena Hart Written by Lena Hart Appliance Repair Content Specialist Published October 20, 2026

Content status Verified

Error code 40
Appliance Cooktop
Quick answer

Code 40 is a communication error between the main power control board and the filter control board; the harness connections are checked first.

Model compatibility

Kenmore reuses codes across series and model years, so 40 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

Communication error between the main power control board and the filter control board.

If the display shows 40, the main power control board and the filter control board are having a communication error.

What the manual lists

Power is disconnected first. The wire harness connections on the filter board and the main power board are checked. Good connections mean the main power control board is replaced; if the problem persists, so is the filter control board.

Models

This applies to Kenmore induction cooktops with model numbers beginning 790, which display numeric codes.

Other codes to look at

Kenmore cooktop repair in Los Angeles

Los Angeles owners with a Kenmore cooktop showing 40 can dial (310) 554-8899 or follow Kenmore cooktop repair. Share the model number and the checks you have tried.

Source: Sears PartsDirect – induction cooktop (790 model) error codes

Caution

Safety warning

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.

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(310) 554-8899
Phone (310) 554-8899
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