Sub-Zero Freezer Error Code EE

EE means the control board cannot get a valid reading from the compartment thermistor, which is the temperature sensor inside the freezer compartment. The code appears in place of the normal temperature display. It indicates the thermistor or its wiring has an open circuit, a short, or a break somewhere between the sensor and the control board.

With the EE code active, the freezer cannot accurately read or regulate its internal temperature, which creates a risk that food may not be kept at safe temperatures. It is best to minimize the time food stays in the freezer until the sensor is repaired. Check food condition and consider moving perishables to another unit if the repair will be delayed.

A power reset will not permanently clear the EE code if the underlying thermistor or wiring fault is still present. The code will return shortly after the unit restarts because the control board will again detect an invalid sensor signal. The fault must be repaired at the component level before the EE display will go away for good.

A knowledgeable DIYer can start by checking and reseating the thermistor wiring connector at J1 or P1 on the control board, which sometimes resolves the fault. Testing the thermistor resistance with a multimeter, expecting 30,000 to 33,000 ohms at 32 degrees Fahrenheit, will confirm whether the sensor itself has failed. If the thermistor or wiring needs replacement, comfort with appliance disassembly and wiring work is required.

If the repair only requires reseating a connector, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the thermistor needs replacement, parts and labor combined generally range from $150 to $400 depending on the model and the technician's rates. Wiring harness replacement can push costs toward the higher end of that range.