Error code reference

Sub-Zero Refrigerator Error Code 88

Electronic control board not receiving status data in response to speed commands (700TF/I-2V only).

SourceSub-Zero 700 Series Refrigerator - Service Manualp. 8-5

Sub-Zero codes Sub-Zero refrigerator codes

Diagnostic procedure

The full 88 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

First diagnostic step

If not experiencing cooling problems, clear error code. If cooling problems, check serial communication wire leads between control board and VS compressor controller; if good, replace both.

SourceSub-Zero 700 Series Refrigerator - Service Manualp. 8-5

Unlock with pass

More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

Unlock 88 procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

Where this code is documented

3 manuals in the MyPros+ library document this code for Sub-Zero refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax

The full 88 procedure

Where this code is documented

Models covered by the manuals that document this code

Related Sub-Zero refrigerator error codes