Written by
Elena Marsh Appliance Care EditorPublished October 29, 2026
VERIFIED
Error code4d/12
ApplianceRange
4d/12 in brief
Appliance: Kenmore 665 model freestanding range; its codes appear as slash-separated pairs such as 1C/6C.
Condition: readings from the oven door switch and the oven door lock switch conflict.
Listed alongside: 4d/11, 4d/51 and 4d/52.
How far the guidance goes
Only the opening question of the repair note is shown: does the oven light come on? The rest is not available. Unplug the range, do not force the door or the lock, and leave the switch inspection to a technician.
Same condition, other pairs
4d/11: the identical door switch versus lock switch conflict
To book a technician anywhere in San Francisco or the Bay Area, dial (415) 825-6393. Have 4d/12, the model number and the oven light’s behavior noted down. The Kenmore range repair page has more.
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 this code means
Door switch and door lock switch disagree.
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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