Kenmore Range Error Code F3 E7

The F3 E7 error code on a Kenmore range indicates that the warming drawer temperature sensor has developed a short circuit condition. The warming drawer uses a dedicated thermistor to monitor cavity temperature and provide feedback to the control board. When the control board detects that the sensor circuit resistance has dropped below the expected range, it interprets this as a short and triggers the F3 E7 fault. A properly functioning thermistor will display a specific resistance value at room temperature; a shorted sensor typically shows near-zero resistance or an out-of-range reading that the control board cannot process.

The most common physical causes of a shorted warming drawer sensor include damaged wiring insulation, a pinched harness, moisture intrusion into the connector, or a failed thermistor element. Because the sensor wiring runs through the back of the range and connects near heat-producing components, the insulation can degrade over time, allowing conductors to contact each other or the chassis ground. This creates the low-resistance condition the control board flags as a short.

Diagnosing this fault begins with disconnecting power to the range, removing the back panels, and confirming the sensor harness is fully seated at both the sensor and the control board connectors. After confirming connections, the sensor itself should be tested with a multimeter to check resistance. If the reading is near zero or dramatically outside the expected range for the current temperature, the sensor requires replacement. If the sensor reads correctly, the wiring harness between the sensor and control board should be inspected for pinching, chafing, or moisture damage.