Error Code C-21
Oven temperature sensor is short circuit or temperature exceeds safe limits
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C-21
What This Means
Shorted temperature sensor; Faulty bake heater stuck on; Faulty broil heater stuck on; Faulty convection heater stuck on; Damaged heater relay; Disconnected sensor wire harness
What actually causes this:
Failed temperature sensor, stuck heating relay, or malfunctioning heater element
First Thing to Check
Disconnect power and measure sensor resistance (must be 1080 ohm)
Parts Involved
How to Fix
- 1
Disconnect power and sensor harness from control
- 2
Measure sensor resistance (should be 1080 ohm at room temperature)
- 3
Check bake, broil, and convection heater resistance values
- 4
Check DLB, Bake, Broil and Convection heater relays for normal operation
- 5
Check harness disconnection at main PCB
- 6
Measure resistance of oven sensor connector on main PCB (should be 2850 ohm)
This Error Applies To
Samsung DOP36M86DL Series Ovens & Ranges (2017) (2017–present)
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