Sub-Zero Refrigerator Error Code 10 1 01

Error code 10 1 01 means the refrigerator compartment thermistor has been detected in a shorted or closed condition. The thermistor is the temperature sensor responsible for monitoring the fresh food section of the refrigerator. When it shorts, its resistance falls outside the acceptable range and the control board can no longer accurately determine compartment temperature. This can lead to improper cooling or continuous compressor operation.

You should not rely on the refrigerator to maintain safe food temperatures while this error is active. Because the control board cannot accurately read the compartment temperature, cooling may be insufficient or erratic. Perishable foods may be at risk if the fault is not addressed promptly. It is best to address the repair quickly or temporarily transfer food to an alternate unit.

Repair costs vary depending on whether the issue is the thermistor sensor, the wiring harness, or a connector. Thermistor parts alone typically range from around $20 to $80 depending on the model, while labor for a qualified technician can add $100 to $250 or more depending on your location and service provider. If the control board is involved, costs will be considerably higher. Getting a diagnostic service call is the best way to get an accurate estimate for your specific unit.

A knowledgeable DIYer can perform the initial diagnostic step by testing the thermistor resistance with a multimeter. The sensor should read between 30,000 and 33,000 ohms when placed in ice water. If the reading is significantly lower or near zero, the thermistor or its wiring needs to be replaced. Wiring inspection and connector cleaning are also within reach for someone comfortable working around appliance components, but thermistor replacement does require sourcing the correct part.

A reset may temporarily clear the error code from the display, but the code will return if the underlying fault is still present. Because code 10 1 01 is tied to a measurable electrical condition, specifically a shorted thermistor circuit, the root cause must be repaired before the error will stay cleared. Resetting without repair is not a solution and may delay identifying the problem.