Sub-Zero error code · 95 2 01
Sub-Zero Code 95 2 01: Freezer Compressor Control Pin Stuck On
Sub-Zero code 95 2 01 means the freezer compressor microprocessor pin is stuck on. The fix is to replace the main control board.
Sub-Zero code 95 2 01 means the microprocessor pin controlling the freezer compressor is stuck in the on position, so the board can no longer switch the compressor off. The fix is to replace the main control board.
What 95 2 01 indicates
This code reports that the microprocessor output pin that commands the freezer compressor is stuck in the on state. Because the control logic can no longer turn that output off, the freezer compressor circuit is being held energized regardless of demand. The prescribed remedy is to replace the control board that contains the failed microprocessor.
What causes 95 2 01
A stuck-on control pin is an internal fault of the board's microprocessor or its output driver, commonly caused by a shorted driver transistor, electrical overstress, or a power surge. The pin can no longer toggle, leaving the freezer compressor command latched on. This is a board-level failure that cannot be repaired in the field.
Likely causes
- Shorted microprocessor output pin on the main control board
- Failed output driver transistor for the freezer compressor
- Electrical overstress or power surge damaging the board
- Internal control board component degradation
Symptoms you may notice
- Freezer compressor runs continuously and will not cycle off
- Freezer compartment running colder than its set point or over-freezing
- Compressor and condenser area noticeably warm from constant operation
- The 95 2 01 code present in the unit's diagnostics
Parts typically replaced for 95 2 01
- Main control board — Replace when the freezer compressor microprocessor pin is confirmed stuck on
Owner-safe checks for 95 2 01
- Confirm whether the freezer compressor runs without ever shutting off
- Check the freezer compartment temperature against its set point
- Note any recent power surges or outages before the fault appeared
When to call a technician
A stuck control pin is an internal microprocessor failure requiring replacement of the main control board, plus verification that the compressor and wiring were not damaged by continuous operation.
Frequently asked
Sub-Zero 95 2 01: people also ask
What does Sub-Zero code 95 2 01 mean on my freezer?
Code 95 2 01 means the microprocessor output pin on the main control board that commands the freezer compressor is stuck in the on state. Because the board can no longer switch that output off, the freezer compressor is held energized regardless of demand, so the freezer runs colder than set point and can over-freeze. The remedy is replacing the main control board.
What can I safely check myself for 95 2 01?
You can confirm whether the freezer compressor runs without ever shutting off, compare the freezer compartment temperature against its set point, and note any recent power surges or outages before the fault appeared. You should not open the control board, because the shorted compressor pin is an internal fault that cannot be repaired in the field.
Can I clear 95 2 01 by cutting power to the freezer?
Cutting power stops the compressor only while the unit is off; once power returns, the 95 2 01 code comes back and the compressor runs continuously again. The microprocessor pin is electrically latched on, so no owner reset restores normal cycling. The code clears permanently only after the main control board is replaced.
Is it harmful to keep running the freezer with 95 2 01?
Schedule service promptly. With the compressor stuck on, the freezer over-freezes and the compressor and condenser area run continuously warm, adding wear from nonstop operation. It is not a shock or fire hazard, but the constant running should be checked to confirm the compressor and wiring were not damaged before the new board is fitted.
What part is replaced for 95 2 01 and what does it cost?
The main control board is replaced once the freezer compressor pin is confirmed stuck on, and the technician verifies the compressor and wiring were not damaged by continuous running. We charge a flat $89 diagnostic to confirm the fault, and the repair is backed by our 365-day warranty. Call (650) 668-1554 to book. We are an independent repair company, not affiliated with Sub-Zero.
How is 95 2 01 different from 95 2 00 on my freezer?
They are opposite faults of the same freezer compressor pin. 95 2 01 is stuck on, so the compressor never stops and the freezer over-freezes. 95 2 00 is stuck off, so the compressor never starts and the freezer thaws. Both require a control board replacement, but with 95 2 01 the compressor should also be checked for stress from running nonstop.
Subzero Repair · Open 24/7 · 365-day warranty
Need a high-end appliance repaired?
Call for urgent cooling or cooking failures, or book online for a service window across the Bay Area.