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Error Code

Kenmore Range Code 3d/12 Sensor Fault

Plain-language guidance for Kenmore code 3d/12 on Range — symptoms, safe checks, and when to call a technician.

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At a glance

Error code overview

A plain-language snapshot of 3d/12 for Kenmore Range — confirm the model series before you act.

Daniel Reeves Written by Daniel Reeves Appliance Repair Content Specialist Published October 20, 2026

Content status Verified

Error code 3d/12
Appliance Range
Quick answer

Code 3d/12 on a Kenmore 665 model range means the oven temperature sensor is defective.

Model compatibility

Kenmore reuses codes across series and model years, so 3d/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

Defective oven temperature sensor.

A range that displays 3d/12 is reporting its oven temperature sensor as defective. The manual covers this on the Kenmore 665 model freestanding range and treats it the same as 3d/11, 3d/21 and 3d/22.

Checks, one after another

  • Disconnect power or unplug the range before anything else.
  • Look at the oven temperature sensor wire harness. Loose wires are plugged back in; a damaged harness is replaced.
  • The sensor resistance is measured by a technician using a volt/ohm meter. Off the manual’s figure means the sensor is replaced.
  • If sensor and wiring are both fine, the manual replaces the electronic oven control.

Other codes people mix up with it

  • 3d/21: sensor fault listed with it
  • 3d/11: sibling code, same condition
  • 1d/11: oven too hot in Bake or Broil mode
  • 4d/11: oven door and door lock switches disagree

Range repair help in the Miami, New York, Houston, Los Angeles and San Diego metro areas

A Kenmore range with 3d/12 on the display can be booked through (844) 747-3641 across the Miami, New York, Houston, Los Angeles and San Diego metro areas. Say which model number it is and what you tried. See also Kenmore range service.

Source: Sears PartsDirect – Kenmore 665 model freestanding range error codes (slash format)

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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(844) 747-3641
Phone (844) 747-3641
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