How do I fix error code E CO on my LG LRYKC2606V?

1. undefined: Check loose connections on CON101 and display hinge connector. 2. undefined: Check CON101 18th-to-16th-pin voltage: should be 12 V. If not, check hinge (loose connection) and if hinge OK, replace Main PCB. 3. undefined: Check CON101 10th-to-16th-pin voltage: should be 5 V. If not, check hinge connection then replace Main PCB. 4. undefined: Check CON101 14th-to-16th-pin voltage: should NOT be 0 or 5 V (data signal). If stuck, replace Display PCB. 5. undefined: Check CON101 12th-to-16th-pin voltage: should NOT be 0 or 5 V. If stuck, replace Main PCB. 6. undefined: Check CON5 4th-to-3rd-pin voltage: should NOT be 0 or 5 V. If stuck, replace Display PCB. 7. undefined: Check CON5 5th-to-3rd-pin voltage: should NOT be 0 or 5 V. If stuck, replace Main PCB. 8. undefined: If all checks pass, explain to customer.

LG LRYKC2606VRefrigerator

Error Code E CO

Communication error between main MICOM and display MICOM

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Check loose connections on CON101 and display hinge connector.
2
Check CON101 18th-to-16th-pin voltage: should be 12 V. If not, check hinge (loose connection) and if hinge OK, replace Main PCB.
3
Check CON101 10th-to-16th-pin voltage: should be 5 V. If not, check hinge connection then replace Main PCB.
4
Check CON101 14th-to-16th-pin voltage: should NOT be 0 or 5 V (data signal). If stuck, replace Display PCB.
5
Check CON101 12th-to-16th-pin voltage: should NOT be 0 or 5 V. If stuck, replace Main PCB.
6
Check CON5 4th-to-3rd-pin voltage: should NOT be 0 or 5 V. If stuck, replace Display PCB.
7
Check CON5 5th-to-3rd-pin voltage: should NOT be 0 or 5 V. If stuck, replace Main PCB.
8
If all checks pass, explain to customer.