LG Oven Error Code F9

What Does Error Code F9 Mean on a LG Oven?

Control board failure — internal fault.

The main electronic control board (ERC — Electronic Range Control) has experienced an internal fault.

What Causes Error Code F9?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

1. 1
   Control board internal component failure 60% of cases
2. 2
   Power surge damage 30% of cases
3. 3
   Age-related board failure 10% of cases

How to Fix LG Oven Error Code F9

1. 1

   Power cycle

   Turn off circuit breaker 15 minutes.

2. 2

   Replace control board

   F9 almost always requires control board replacement.

   🔩 LG oven control board ($150–$380)

   ⚠️ Photograph all wiring before disconnecting.

How to Reset Error Code F9

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

When to Call a Professional

Same Code on Other Brands

Error code F9 appears on these other brands too. Click to compare:

GE Appliances Oven F9

Door latch failure — self-clean lock not completing

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Oven:

External links — ApplianceErrors.com is not affiliated with these retailers.

Frequently Asked Questions