Warning: Disconnect power before servicing.
ErrBase

Samsung Oven Error Codes: C-21, C-F2, C-24, C-A2 Complete Guide

Quick Answer

Samsung ovens use an NTC thermistor rated at 10K ohms at 77 degrees F for temperature sensing, which is entirely different from GE's 1080-ohm RTD probe and Frigidaire's 1100-ohm RTD. Buying the wrong sensor is the most common and most expensive mistake on Samsung oven repairs.

Samsung ovens use an NTC thermistor rated at 10K ohms at 77 degrees F for temperature sensing, which is entirely different from GE's 1080-ohm RTD probe and Frigidaire's 1100-ohm RTD. Buying the wrong sensor is the most common and most expensive mistake on Samsung oven repairs. Samsung C-F2 (temperature runaway) has a unique architecture compared to GE F2: Samsung places a thermal cutoff fuse in series with the bake element, so C-F2 can appear even when the control board is perfectly functional - if that fuse blows, the oven reads C-F2 regardless of board condition. Samsung FlexDuo models (NE58K9500SG) have a C-24 code that is exclusive to the dual-oven configuration - it only appears when the FlexDuo divider is installed and the lower oven sensor fails. On Samsung NE series freestanding ranges, accessing the main board requires pulling the anti-tip bracket, which is a non-obvious step that catches many DIYers off guard.

SamsungOven

About These Samsung Oven Error Codes

Samsung ovens use C-prefix codes for sensor, temperature, and motor faults. The NTC thermistor spec (10K ohms) is different from every other major oven brand - confirm sensor type before ordering.

Most Common Error Codes

NTC temperature sensor failure (C-21, C-24)40%
Thermal cutoff fuse blown on bake element circuit (C-F2)24%
Control board relay stuck causing temperature runaway (C-F2)14%
Lower oven sensor fault on FlexDuo models (C-24)12%
Convection fan motor failure (C-A2)10%

Symptoms You May Notice

  • C-code displayed on Samsung oven control panel
  • Oven shuts down mid-cycle
  • Oven overheats or fails to reach temperature
  • Fan not audible during convection operation

Tools Required for Diagnosis

Multimeter (ohm and continuity mode)Nut driver (1/4")Phillips screwdriverFlashlight

How to Identify Your Error Code

1

Note the exact C-code displayed

Note the exact C-code displayed. C-21 and C-24 are sensor codes; C-F2 is a temperature runaway code requiring thermal fuse check first; C-A2 is a fan motor code.

2

For any Samsung oven sensor code (C-21

3

For C-F2, before testing the control board, test the thermal

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Samsung NTC Temperature SensorDG32-00002B · $15–$35
Samsung Oven Thermal Cutoff FuseDG47-00019A · $8–$20
Samsung Oven Control BoardDG92-01099A · $120–$250

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $129 (Parts) vs $2200 (New Machine)

Frequently Asked Questions

What makes Samsung oven temperature sensors different from other brands?
Samsung ovens use an NTC (Negative Temperature Coefficient) thermistor rated at 10,000 ohms (10K) at 77 degrees F. GE uses an RTD probe rated at 1080 ohms. Frigidaire uses an RTD at 1100 ohms. The operating principle, resistance value, and physical connector are different enough that cross-brand sensors will not work correctly and will cause ongoing temperature errors.
Why does Samsung C-F2 appear even when the control board is fine?
Samsung places a thermal cutoff fuse in series with the bake element circuit. If the oven overheats and blows this fuse, C-F2 appears on the display even though the control board relay is functioning correctly. Always test the thermal cutoff fuse first for C-F2 - replacing a $10 fuse before a $200 board can save significant money.
Do Samsung ovens have a hidden diagnostic or service mode?
Samsung consumer ovens do not have a publicly documented service mode like GE Profile ranges do. Diagnosis relies on multimeter testing of the NTC sensor, thermal fuse, and visual inspection of the control board. Samsung service technicians use a separate Samsung service tool for deeper diagnostics.

Related Samsung Oven Error Codes

Code: C-21Samsung Oven C-21 Error Code: Temperature Sensor FailureCode: C-F2Samsung Oven C-F2 Error Code: Temperature RunawayCode: C-24Samsung Oven C-24 Error Code: Lower Oven Sensor FaultCode: C-A2Samsung Oven C-A2 Error Code: Fan Motor Fault

Same Fix on Other Brands

GE F3: Frigidaire F30:

Same Fix Works on These Brands

Samsung shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Samsung washerSamsung Washer 3C2 Error Code: Motor StallSamsung washerSamsung Washer 3E Error Code: Motor FaultSamsung washerSamsung Washer 4C Error Code: No Water SupplySamsung washerSamsung Washer 4E Error Code: Water Supply Fault (Top Load)Samsung washerSamsung Washer 5C Error Code: Drain Error (Older Display)Samsung washerSamsung Washer 8C Error Code: Vibration Sensor Fault

Models Known to Experience HUB Errors

This repair applies to most Samsung ovens with this error code. Common model numbers include:

NE59M6850SS, NE63T8911SS, NE58K9500SG, NE59J7630SS, NE63A6511SS

Last verified for technical accuracy on March 14, 2026