Sub-Zero Refrigerator Error Code 15 9 01

Error code 15 9 01 means the auger relay on the control board is stuck in the closed position, causing continuous power to be sent to the auger motor in the ice dispenser. Normally the relay opens and closes based on dispense commands, but a failed relay keeps the circuit permanently energized. The control board must be replaced to resolve this fault.

Continuous power to the auger motor means it may run without stopping, which can cause the motor to overheat and wear out prematurely. While this fault does not immediately affect food safety or cooling, leaving it unaddressed risks secondary damage to the auger motor and dispenser components. It is best to address the control board replacement promptly to avoid additional repair costs.

No, a power reset will not clear this error. Error 15 9 01 is caused by a physical relay failure on the control board, meaning the relay contacts are mechanically fused and cannot be restored by cycling power. The fault will return immediately after a reset because the underlying hardware defect remains. Replacing the control board is the only way to permanently resolve this error code.

The repair requires replacing the control board, which involves working with the refrigerator's electrical system. A knowledgeable DIYer comfortable with appliance disassembly and basic electrical safety can perform this repair, but it is important to disconnect power before beginning. If you are not comfortable working around appliance wiring, a qualified technician is recommended. Before ordering a board, also check that the auger motor spins freely so a mechanical obstruction is not contributing to the problem.

The primary repair is control board replacement. Sub-Zero control boards are premium components, and parts alone typically range from $200 to $600 or more depending on the specific model. If you hire a technician, total repair costs including labor generally range from $350 to $900. Prices vary by region, service provider, and the exact board required for your unit.