A plain-language snapshot of 4d/12 for Kenmore Range — confirm the model series before you act.
Written by
Lena Hart Appliance Repair Content SpecialistPublished October 20, 2026
Content statusVerified
Error code4d/12
ApplianceRange
Quick answer
4d/12 on a Kenmore 665 model freestanding range means the oven door and oven door lock switches disagree.
Model compatibility
Kenmore reuses codes across series and model years, so 4d/12 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 thiscode means
Oven door and oven door lock switches disagree.
A Kenmore range showing 4d/12 is reporting that the oven door switch and the oven door lock switch do not agree with each other.
Models and code format
This applies to the Kenmore 665 model freestanding range, which shows its codes as pairs separated by a slash, such as 1C/6C. The same condition is listed for 4d/11, 4d/51 and 4d/52.
What the code tells you
The listing names the condition as the door and door lock switches disagreeing. The listed repair for this condition begins with whether the oven light turns on, and the excerpt stops there. Beyond that, the check belongs to a technician working on the door and lock switches, so unplug the range and avoid forcing the door or the lock.
Related codes
4d/11 has the same door and lock switch condition.
For Kenmore range service in Los Angeles, call (310) 554-8899. Have the code 4d/12, the range’s model number and whether the oven light still comes on ready. Details are on the range repair page.
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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