Sub-Zero Refrigerator Error Code 35 1 38

Error code 35 1 38 indicates a power output fault on the refrigerator evaporator fan circuit. The control board attempted to drive the evaporator fan motor and detected an abnormal electrical condition, such as an overcurrent draw, a short, or an open circuit. This fault signals a problem with the fan motor itself, the wiring harness, or the board output rather than a sensor or sealed system issue.

If the evaporator fan is not running, the refrigerator compartment will not maintain safe food temperatures. You should check the actual temperature inside the refrigerator and move perishable food to a working refrigerator if cooling is compromised. Continuing to run the unit with a non-functional evaporator fan can also cause the evaporator coil to ice over excessively.

Repair costs vary depending on the failed component. A replacement evaporator fan motor typically ranges from $50 to $150 for the part, while a control board can range from $200 to $500 or more. Adding labor costs, total repair bills commonly fall between $150 and $700 depending on the diagnosed cause and your location. Sub-Zero appliances often have higher parts costs than standard appliance brands.

Some causes, such as a blocked fan blade due to ice or a loose connector, can be addressed without specialized tools. However, testing motor winding resistance, diagnosing wiring harness continuity, and replacing a control board require a good understanding of electrical diagnostics. If you are not comfortable working with appliance wiring and control boards, a qualified technician is recommended.

A power reset may temporarily clear the fault code, but if the underlying electrical problem with the fan motor or wiring persists, the code will return once the control board attempts to power the fan again. Clearing the code without addressing the root cause does not restore proper operation and may delay diagnosis while food temperatures rise.