Written by
Elena Marsh Appliance Care EditorPublished October 29, 2026
VERIFIED
Error code1d/21
ApplianceRange
If the self-clean cycle on a Kenmore 665 model freestanding range ends in 1d/21, the oven overheated in Clean mode. Its manual entry also covers 1d/22.
Within an owner’s reach
Shut the range off at its supply or take the plug out of the outlet.
Press any loose wiring on the oven temperature sensor harness back onto its connector.
Put in a new harness if the existing one is damaged.
Technician territory
Everything past the harness needs tools: a meter reading of the sensor’s resistance, a new oven temperature sensor, or a new electronic oven control once sensor and wiring pass.
Kenmore range service, San Francisco and the Bay Area
To get a technician looking at a Clean mode overheat, call (415) 825-6393. Say that 1d/21 appeared during a cleaning cycle and give the model number. The Kenmore range repair page explains the visit.
Model compatibility: Kenmore reuses codes across series and model years, so 1d/21 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
The oven is too hot in Clean mode.
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 Kenmore appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Kenmore appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
