How do I fix error code CO E on a LG refrigerators?

1. undefined: Check all connectors for loose connections throughout the wiring harness. 2. undefined: Measure voltage at CON101 pin 7 to pin 6. Expected: 12V. Also measure CON101 pin 3 to pin 6. Expected: 5V. If voltages are incorrect: check hinge connector for loose connection; if hinge connection is good and voltages still wrong: replace Main PCB. 3. undefined: Measure CON101 pin 5 to pin 6. Expected: 0V or 5V (toggling). If not 0V or 5V: replace the Display PCB. 4. undefined: Measure CON101 pin 4 to pin 6. Expected: 0V or 5V. If not 0V or 5V: replace Main PCB. 5. undefined: Measure CON6 pin 8 to pin 9. Expected: 0V or 5V. If not 0V or 5V: replace Display PCB. 6. undefined: Measure CON6 pin 10 to pin 9. Expected: 0V or 5V. If not 0V or 5V: replace Main PCB.

LG Refrigerators

Error Code CO E

Communication Error

Moderate

Address soon - your appliance may not work properly

Also displayed as: CO E

How to Fix

1
Check all connectors for loose connections throughout the wiring harness.
2
Measure voltage at CON101 pin 7 to pin 6. Expected: 12V. Also measure CON101 pin 3 to pin 6. Expected: 5V. If voltages are incorrect: check hinge connector for loose connection; if hinge connection is good and voltages still wrong: replace Main PCB.
3
Measure CON101 pin 5 to pin 6. Expected: 0V or 5V (toggling). If not 0V or 5V: replace the Display PCB.
4
Measure CON101 pin 4 to pin 6. Expected: 0V or 5V. If not 0V or 5V: replace Main PCB.
5
Measure CON6 pin 8 to pin 9. Expected: 0V or 5V. If not 0V or 5V: replace Display PCB.
6
Measure CON6 pin 10 to pin 9. Expected: 0V or 5V. If not 0V or 5V: replace Main PCB.

This Error Applies To

LG LFXS26973 Series Refrigerators

Service manual exact match: LFXS26973SService manual exact match: LFXS26973DService manual exact match: LFXS26973MService manual exact match: LFXS26973BService manual exact match: LFXS26973W