Error code reference

Sub-Zero Refrigerator Error Code 40 2 00

Zone 2 stepper current fault - no current detected.

SourceSub-Zero Service Manual: ICBIT-36CIID: Service Manualp. 84

Diagnostic procedure

The full 40 2 00 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
Check baffle operation; replace baffle or control board.

SourceSub-Zero Service Manual: ICBIT-36CIID: Service Manualp. 84

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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