Error code reference

LG Refrigerator Error Code R0

Refrigerator sensor failure: short or open circuit in the refrigerator sensor wires, causing compressor/fan to cycle 15 minutes ON / 15 minutes OFF while defrost heater operates normally.

SourceLG Refrigerator GM Series - Service Manual: GM-31/34/39/46*SCSection 9 (sensor fault table)

Diagnostic procedure

The full R0 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 refrigerator sensor resistance and connector wiring.

SourceLG Refrigerator GM Series - Service Manual: GM-31/34/39/46*SCSection 9 (sensor fault table)

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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Where this code is documented

12 manuals in the MyPros+ library document this code for LG refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

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