Error Code 2
Fridge temperature sensor is not responding
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 2C
What This Means
Sensor connector not seated at Main PCB CN30 pins 1 and 5; Thermistor wire harness damaged or cut; Thermistor defective; Main PCB defective
What actually causes this:
The main fridge temperature sensor wire came loose or failed
First Thing to Check
Feel if the main fridge section is cold — if not, the sensor may have failed
Parts Involved
How to Fix
- 1
1. Unplug and inspect CN30 connector pins 1 and 5
- 2
2. Measure voltage between CN30 pins 1 and 5 — should be 4.5V to 1.0V
- 3
3. Reconnect any loose connectors and power on
- 4
4. Verify error clears after sensor reseating
- 5
5. If voltage still out of range, replace fridge thermistor
This Error Applies To
Samsung RF22N9781 Series Refrigerators (2018) (2018–present)
Related Error Codes
Freezer temperature sensor malfunction
Room temperature sensor not working
Ice maker temperature sensor failure
Convertible zone temperature sensor failure
Ice storage area temperature sensor malfunction
Freezer defrost sensor is faulty
Convertible zone defrost sensor malfunction
Internal humidity sensor not responding