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Error code reference

Sub-Zero Refrigerator Error Code 35 2 38

Freezer evaporator fan power output fault.

Sub-Zero codesSub-Zero refrigerator codes

Freezer evaporator fan power output fault.

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What 35 2 38 means on a Sub-Zero refrigerator

Error code 35 2 38 on a Sub-Zero refrigerator indicates a freezer evaporator fan power output fault. This means the control board has detected an abnormal condition on the circuit responsible for supplying power to the freezer evaporator fan motor. The evaporator fan circulates air across the freezer evaporator coils and distributes cold air throughout the freezer compartment. When this fan fails to operate correctly, freezer temperatures rise and food preservation is compromised.

The fault is specific to the power output side of the fan circuit, meaning the control board is either unable to deliver the correct voltage to the fan motor, or it is detecting a feedback signal that falls outside acceptable parameters. Possible causes include a failed fan motor drawing excessive current, a short circuit or open circuit in the wiring harness between the control board and the fan, or a damaged connector at either end of that circuit. In some cases, the control board output driver itself may be the source of the fault if the wiring and motor both test within specification.

Diagnosing this code requires checking the fan motor for proper operation, inspecting the wiring harness for damage, chafing, or loose connections, and verifying that the control board output is delivering appropriate voltage. If the fan motor is seized or has failed internally, it may create an overcurrent condition that triggers this fault code. Thorough electrical testing is essential before replacing any component to avoid misdiagnosis.

Source: manufacturer service documentation.

Common causes of 35 2 38

  1. 01

    Failed freezer evaporator fan motor

    Part replacement

    The fan motor may have seized, burned out, or developed an internal short, causing the control board to detect an abnormal load on its power output circuit. The motor can be tested for continuity and proper resistance to confirm failure.

  2. 02

    Wiring harness damage or short circuit

    Wiring / connection

    Damaged, chafed, or pinched wiring between the control board and the evaporator fan can cause a short or open circuit that triggers the power output fault. Inspect the full length of the harness for visible damage and test for continuity.

  3. 03

    Loose or corroded connector at the fan or board

    Wiring / connection

    A poor connection at the fan motor connector or the control board harness plug can interrupt the power circuit and generate this fault. Unplugging and reseating connectors while inspecting the terminals for corrosion is a key diagnostic step.

  4. 04

    Ice buildup obstructing the fan blade

    Wiring / connection

    Excessive ice accumulation around the evaporator fan can jam the blade, causing the motor to stall and draw high current, which the board detects as a power output fault. Check for ice buildup after defrosting the freezer compartment.

  5. 05

    Faulty control board fan output driver

    Part replacement

    If the fan motor and all wiring test correctly but the fault persists, the output circuit on the control board itself may be damaged. Board replacement is typically a last resort after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about 35 2 38

What does 35 2 38 mean on a Sub-Zero refrigerator?
Error code 35 2 38 indicates a freezer evaporator fan power output fault. The refrigerator's control system has detected a problem with the circuit that powers the fan motor responsible for circulating cold air through the freezer. This can result from a failed motor, damaged wiring, or an issue with the control board's output. Prompt diagnosis is recommended to prevent freezer temperature loss and food spoilage.
Can I fix error code 35 2 38 myself?
Some aspects of this diagnosis are DIY-accessible, such as inspecting wiring for visible damage, reseating connectors, and checking for ice obstructing the fan blade. However, testing the fan motor and control board output circuit requires a multimeter and comfort with electrical testing. If the control board needs replacement, most homeowners prefer professional service given the complexity and cost involved.
Is it safe to keep using my refrigerator when error code 35 2 38 is active?
With the freezer evaporator fan not operating correctly, the freezer compartment may not maintain safe temperatures, putting frozen food at risk. Continuing to use the refrigerator without addressing this fault can lead to food spoilage or further component damage. It is best to address the issue promptly, and to monitor freezer temperatures closely in the interim.
How much does it cost to repair error code 35 2 38 on a Sub-Zero refrigerator?
Repair costs vary depending on the root cause. A replacement evaporator fan motor typically ranges from $50 to $150 or more for the part, while control board replacement can range from $200 to $600 or higher. Adding professional labor, total repair costs can fall anywhere from $150 to $800 or more depending on the specific part needed and local service rates.
Will resetting my Sub-Zero refrigerator clear error code 35 2 38?
A reset may temporarily clear the fault code, but if the underlying cause is still present, the code will return once the control system re-evaluates the fan power circuit. Resetting is useful as part of the diagnostic process to confirm whether the fault is intermittent or persistent. It is not a substitute for identifying and correcting the actual component failure.

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