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Error code reference
Sub-Zero Refrigerator Error Code 15 9 01
Auger relay is stuck closed; power to auger at all times.
SourceSub-Zero Service Manual: ICBBI-42UFDID: Service Manualp. 156
Diagnostic procedure
The full 15 9 01 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Verify auger relay is stuck closed. Replace control board.
SourceSub-Zero Service Manual: ICBBI-42UFDID: Service Manualp. 156
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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