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Samsung Oven C-24 Error Code: Lower Oven Sensor Fault Fix

Quick Answer

Samsung FlexDuo is the critical context for C-24: this code only appears on FlexDuo-capable ranges when the divider is physically installed, creating a lower oven cavity that requires its own independent temperature sensor. If you have a C-24 on a non-FlexDuo Samsung range, that is unusual - verify your model is a FlexDuo unit.

Samsung FlexDuo is the critical context for C-24: this code only appears on FlexDuo-capable ranges when the divider is physically installed, creating a lower oven cavity that requires its own independent temperature sensor. If you have a C-24 on a non-FlexDuo Samsung range, that is unusual - verify your model is a FlexDuo unit. The lower oven NTC sensor on FlexDuo models is a separate part from the upper oven sensor and requires a different installation path - it is located behind the divider mounting area rather than the standard rear cavity wall. Samsung NTC sensor spec remains consistent: 10K ohms at 77 degrees F for both the upper (C-21) and lower (C-24) sensors. C-24 is worth verifying by removing the FlexDuo divider: if C-24 clears when the divider is removed, the lower cavity sensor circuit is confirmed as the fault source.

SamsungOvenSeverity: mediumDifficulty: intermediate78% DIY Success
Time to Fix
25–60 min
Difficulty
intermediate
Parts Cost
$20 – $250
Tools Needed
Multimeter (ohm mode), Phillips screwdriver

What Does the C-24 Code Mean?

The lower oven temperature sensor has failed on a Samsung FlexDuo dual-oven model. C-24 only appears when the FlexDuo divider is installed. Test the lower NTC sensor at 10K ohms.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Lower oven NTC thermistor failure in FlexDuo cavity40%
Lower oven sensor wiring harness damaged or connector loose24%
Moisture in lower cavity sensor connector22%
FlexDuo divider seating issue affecting sensor connector continuity14%

Symptoms You May Notice

  • C-24 displayed on Samsung FlexDuo range
  • Code appears only when FlexDuo divider is installed
  • Lower oven cavity does not heat
  • Upper oven functions normally while lower shows error

Can you reset a Samsung oven to clear the C-24 code?

Press Cancel to dismiss C-24. Remove the FlexDuo divider and cut breaker power for 30 seconds. If C-24 returns only when the divider is reinstalled, the lower sensor circuit requires repair.

Tools Required for Diagnosis

Multimeter (ohm mode)Phillips screwdriverNut driver (1/4")Flashlight

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

With C-24 displayed

With C-24 displayed, remove the FlexDuo divider panel from the oven cavity. Wait 30 seconds and observe if C-24 clears from the display.

2

Cut power at the breaker

3

If sensor reads correctly

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 Lower Oven NTC Sensor (FlexDuo)DG32-00006A · $20–$45
Samsung Oven Control BoardDG92-01099A · $120–$250

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $135 (Parts) vs $2200 (New Machine)

Frequently Asked Questions

Can Samsung C-24 appear on non-FlexDuo models?
It is unlikely. C-24 is specifically mapped to the lower oven sensor circuit that only exists on FlexDuo-enabled ranges. If C-24 appears on a standard single-cavity Samsung range, verify the model number - it may be a FlexDuo-capable range not currently using the divider, but still having the lower sensor circuit present.
Does Samsung C-24 affect the upper oven?
In most FlexDuo configurations, the upper oven continues to function normally when C-24 fires because the upper and lower sensor circuits are independent. Only the lower oven cavity is disabled. This is actually a useful diagnostic indicator - if both upper and lower ovens are affected, the fault is more likely a C-21 (main sensor) rather than C-24.
Is the Samsung C-24 sensor the same part as the C-21 sensor?
No. While both sensors are NTC thermistors at 10K ohms spec, the lower oven sensor (C-24) is a different physical part with different mounting hardware for the FlexDuo cavity. The OEM part numbers are different. Confirm you are ordering the lower cavity sensor part, not the main upper oven sensor.

Related Samsung Oven Error Codes

Code: HUBSamsung Oven Error Codes: C-21, C-F2, C-24, C-A2 Complete GuideCode: C-21Samsung Oven C-21 Error Code: Temperature Sensor FailureCode: C-F2Samsung Oven C-F2 Error Code: Temperature Runaway

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 C-24 Errors

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

NE59M6850SS, NE63T8911SS, NE58K9500SG, NE59T7851WS

Last verified for technical accuracy on March 14, 2026