Kenmore Refrigerator Error Code Er 1F

Er 1F indicates that the freezer temperature sensor has failed due to a cut or short circuit in its wiring. The control board cannot receive a valid temperature reading from the sensor, which disrupts normal freezer operation. The fault points specifically to the sensor circuit, including the thermistor itself, the wiring harness, and the connectors between them.

A power reset may temporarily clear the display, but the code will return if the underlying sensor or wiring fault is still present. The control board will re-detect the out-of-range signal on the next monitoring cycle and reactivate the fault. A permanent fix requires repairing or replacing the faulty component.

If only the wiring harness needs repair or a connector needs reseating, costs can be minimal, covering only your time and possibly a small amount of wire or connector materials. Replacing the freezer thermistor typically costs between $15 and $60 for the part, plus labor if you hire a technician. A service call with professional diagnosis and repair generally ranges from $100 to $300 depending on the specific repair needed.

A knowledgeable DIYer can often resolve this error by inspecting and reseating the sensor wiring harness connectors or replacing a visibly damaged wire. If the thermistor itself has failed, replacing it is a straightforward repair that requires basic tools and a compatible replacement sensor. However, if the fault traces back to the main control board, professional diagnosis is recommended.

Operating the refrigerator with an active Er 1F code carries risk, as the control board may not be able to regulate freezer temperature accurately without a working sensor. Food in the freezer could be at risk if temperatures rise to unsafe levels. It is advisable to check freezer temperatures manually with a thermometer and address the fault promptly.