Kenmore Refrigerator Error Code Er 2

Er 2 indicates the control board has detected an abnormal condition on the freezer temperature sensor circuit, either a cut wire (open circuit) or a short circuit. The freezer thermistor sends resistance-based temperature readings to the control board, and when that signal is missing or out of range, the board triggers this fault code. The refrigerator cannot properly regulate freezer temperature while this error is active.

It is not recommended to continue relying on the refrigerator for food storage while Er 2 is active, because the freezer temperature may not be regulated correctly without a working sensor. Food safety can be compromised if the freezer is not maintaining proper temperatures. Address the fault as soon as possible and use a separate thermometer to monitor the freezer temperature in the meantime if needed.

If the issue is simply a loose connector at CON6, there may be no parts cost at all, just the cost of a service call if a technician performs the repair. Replacing a freezer thermistor typically falls in the range of $20 to $60 for the part, plus labor. If the main control board is the culprit, parts and labor costs can range from $150 to $400 or more depending on the model and service provider.

Start by checking connector CON6 for a loose or improperly seated connection, since this is the most common cause. If the connector is secure, inspect the wiring harness running to the freezer sensor for any visible cuts or damage. If the wiring looks intact, test the thermistor with a multimeter for an open or shorted circuit, and replace the sensor if it fails the test. If all wiring and the sensor test correctly, the main control board may need to be evaluated.

A power reset by unplugging the refrigerator for a few minutes may temporarily clear the display, but if the underlying cause (loose connector, damaged wiring, or failed sensor) is not corrected, the code will return once the control board re-checks the sensor circuit. A reset alone is not a fix and should only be used as a step in confirming whether the fault is intermittent.