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How to Troubleshoot the Error Codes on Your LG Refrigerator: CO, Od

These error codes appear when your refrigerator detects a problem with an internal component: Er CO, Er Od, Er Sd, Er CI, Er IF, Er CF, Er IU, Er dH, Er d1, Er d2, Er d, Er H1, Er H2, Er FS, Er rS, Er F1, Er F2, Er US, Er LS, Er E1, Er E2, Er r, Er dS, Er IS, Er Id, Er gS, or Er gF.

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What to Check First

  1. Do not disassemble the refrigerator or replace internal parts yourself. Doing so may cause fire, electric shock, serious injury, or death.
  2. If the error code persists, stop using the refrigerator and contact LG Support for service.
  3. These error codes appear when your refrigerator detects a problem with an internal component: Er CO, Er Od, Er Sd, Er CI, Er IF, Er CF, Er IU, Er dH, Er d1, Er d2, Er d, Er H1, Er H2, Er FS, Er rS, Er F1, Er F2, Er US, Er LS, Er E1, Er E2, Er r, Er dS, Er IS, Er Id, Er gS, or Er gF.
  4. Reset your refrigerator. If the error code remains, contact LG Customer Support for further assistance.
  5. Your refrigerator displays this error code when it detects an issue with its internal system, such as a faulty component, control circuit, or disconnected wire.
  6. Unplug your refrigerator from the wall outlet. Wait about 5 minutes. Plug your refrigerator back into the wall outlet. Check if the error code has cleared.
  7. If the issue persists after following the steps above, you can get further support through LG Chatbot on our website or by requesting a technician visit.
  8. This guide is based on standard models. The settings menu may vary by model.

Why This Can Happen

Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.

Safety and Model-Specific Guidance

Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.

Frequently Asked Questions

What should I check first for How to Troubleshoot the Error Codes on Your LG Refrigerator: CO, Od, Sd, CI, IF, CF, IU, dH, d1, d2, d, H1, H2, FS, rS, F1, F2, US, LS, E1, E2, r, dS, IS, Id, gS, and gF?

Do not disassemble the refrigerator or replace internal parts yourself. Doing so may cause fire, electric shock, serious injury, or death.

When should I stop troubleshooting and contact LG?

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Does this guidance apply to every LG model?

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

Buying Guides for This Product Type

Efficiency & running costRefrigerator Efficiency, Energy & Running-Cost GuideHousehold use caseRefrigerator Family & High-Use Household GuideFeatures & valueRefrigerator Features Worth Paying For — Value GuideFit & installationRefrigerator Fit, Installation & Delivery Planning

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Read the Official LG Guide