Error Code 46C
I/O Expander is not responding to main board
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 46C
What This Means
I/O Expander failure; Main PCB malfunction; Cable connection problem
What actually causes this:
Main PCB failure or communication line break
First Thing to Check
Check if all connectors to main PCB are attached
Parts Involved
How to Fix
- 1
Check I/O Expander connector
- 2
Verify cable connections
- 3
Test I/O communication signals
This Error Applies To
Samsung RF28K9070A Series Refrigerators (2018) (2018–present)
Related Error Codes
Ice maker temperature sensor failed
Freezer temperature sensor is not working
External air sensor not responding correctly
Fridge fan motor is not operating
Cool Select fan motor is not running
Fridge temperature sensor is not working
Cool Select Room sensor error detected
Ice maker sensor malfunction detected