How do I fix error code C-20 on my Samsung NQ70M9770D?

1. undefined: Check connector at Main PCB 2. undefined: Check connector at temperature sensor 3. undefined: Measure sensor resistance at room temperature (should be ~1080 ohms) 4. undefined: Verify wire continuity

Samsung NQ70M9770DOvens & Range

Error Code C-20

Temperature sensor circuit is open - no resistance reading possible

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-20

What This Means

Temperature sensor disconnected; Sensor connector not fully inserted; Sensor wire broken; Temperature sensor failure

What actually causes this:

Loose connector, broken wire, or failed temperature sensor

First Thing to Check

Reseat temperature sensor connector at Main PCB (CN320 or CN600 pin 10)

Parts Involved

Temperature SensorMain PCBConnectors

How to Fix

1
Check connector at Main PCB
2
Check connector at temperature sensor
3
Measure sensor resistance at room temperature (should be ~1080 ohms)
4
Verify wire continuity

Other Error Codes for NQ70M9770D

C-30

Temperature sensor internal to Main PCB is not functioning

C-d0

Keypad short circuit detected

C-21

Temperature sensor reading exceeds safe operating threshold

C-d1

Door lock mechanism malfunction or misalignment

C-23

Meat probe sensor circuit shows abnormally low resistance

H-3

Bake heating element not energizing during self-test

C-31

Main control board temperature sensor reads excessive heat

-dC-

Partition configuration changed during active cooking cycle

Need more help with your Samsung NQ70M9770D?