Error Code 46
Input/output expansion module is not responding to main board
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: Communication Error between Main ↔ I/O Expander
What This Means
I/O expander communication cable disconnected; Cable damaged, shorted, or misrouted; I/O expander circuit failure; Main PCB I2C communication failure; Power supply issue to I/O expander
What actually causes this:
I/O expander PCB failure or main board communication circuit issue
First Thing to Check
Check cable and connectors between main PCB and I/O expander
Parts Involved
How to Fix
- 1
Check all I2C communication cables to I/O expander
- 2
Verify power supply to I/O expander (should have +5V and GND)
- 3
Check for damaged or bent connector pins
- 4
Inspect for loose connections at main board
This Error Applies To
Samsung BRF425200A Series Refrigerators (2017) (2017–present)
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