Error code reference

KitchenAid Microwave Error Code E1

Temperature sensor opened (when displayed on upper/left side) or temperature sensor shorted.

SourceKitchenAid KAC-25 Microwave/Oven - Job Aidp. 4-1

Diagnostic procedure

The full E1 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check sensor connection, then measure sensor resistance (1080 ohms at 70°F, add 2 ohms per degree). If resistance is not valid, replace sensor. If sensor resistance and connections are good, oven cavity temperature may have exceeded safe level: check for welded-closed relays on the control.

SourceKitchenAid KAC-25 Microwave/Oven - Job Aidp. 4-1

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

1 manual in the MyPros+ library documents this code for KitchenAid microwave.

Models covered by the manuals that document this code

More models are covered than are listed here.

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