How do I fix error code C-20 on my Samsung NV51M9770SS?

1. undefined: Disconnect power and open back cover 2. undefined: Disconnect sensor harness from control 3. undefined: Measure sensor resistance (should be 1080Ω at room temperature) 4. undefined: Check wire harness terminals for damage 5. undefined: Check resistance of oven sensor connectors on main PCB with harness disconnected (Normal: 2850Ω)

Samsung NV51M9770SSOvens & Range

Error Code C-20

Q: What does error code C-20 mean on a Samsung NV51M9770SS?

Oven temperature sensor malfunction Oven sensor open circuit; Oven sensor short circuit; Damaged wire harness connections; Poor connector contact

Oven temperature sensor malfunction

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-20

What This Means

Oven sensor open circuit; Oven sensor short circuit; Damaged wire harness connections; Poor connector contact

What actually causes this:

Broken sensor, loose connector, or shorted wiring in sensor circuit

First Thing to Check

Measure oven sensor resistance (1080Ω at room temperature)

Parts Involved

Oven sensorWire harnessMain PCB

How to Fix

1
Disconnect power and open back cover
2
Disconnect sensor harness from control
3
Measure sensor resistance (should be 1080Ω at room temperature)
4
Check wire harness terminals for damage
5
Check resistance of oven sensor connectors on main PCB with harness disconnected (Normal: 2850Ω)