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Source-backed error-code guide

Reviewed

Samsung Microwave C-10 / C-11 / C-12 Error Code

These codes indicate a sensor-system error on models that use the relevant sensing feature. They do not justify opening the microwave or replacing a sensor from the display alone.

Applies to Samsung microwave oven with an applicable electronic display

What the appliance detected

Detected condition

Samsung groups C-10, C-11, and C-12 as errors involving the gas, Easy, or pH sensor system on applicable microwave models.

What may contribute

Possible causes

  • The applicable cooking-sensor system may not be reporting normally.
  • The sensor circuit, wiring, connector, or control may require professional diagnosis.
  • Recent moisture around the control electronics may contribute to an error display.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the code and model before resetting

    • Photograph or write down the exact display, including punctuation and capitalization: C-10, C-11, C-12.
    • Confirm the complete Samsung model code and use its user manual to verify the display applies to that microwave.

  2. Disconnect power and consider recent moisture

    • Samsung says to unplug the microwave or switch its circuit breaker off before the reset attempt. Do not remove the outer cabinet or any service panel.
    • If steam, a spill, or cleaning moisture recently reached the controls, leave the microwave powered off and allow the exterior controls to dry naturally. Do not use a heat gun, hair dryer, compressed air, or liquid cleaner inside control openings.

  3. Try the Samsung reset once

    • If there is no smoke, burning odor, arcing, visible damage, or wet electrical condition, wait at least 60 seconds with power disconnected and then restore power once.
    • If the code returns, stop using the microwave and request service rather than repeating resets.

Actions not recommended

  • Do not remove the microwave cabinet, control panel, waveguide cover, magnetron cover, or other service panels.
  • Do not touch or test the high-voltage capacitor, transformer, inverter, magnetron, door-interlock wiring, or internal fuses. A microwave can retain dangerous voltage after it is unplugged.
  • Do not bypass, defeat, tape, bridge, or adjust door-interlock switches or operate the microwave with a damaged or misaligned door.
  • Do not perform live-voltage, resistance, continuity, or capacitor-discharge procedures as a homeowner troubleshooting step.
  • Do not keep using the microwave if the code returns after the single documented reset.

When to stop and request service

  • Request qualified microwave service if the code returns after the single Samsung power reset.
  • Stop immediately and leave power disconnected for smoke, a burning odor, repeated arcing, visible wiring or door damage, a repeated breaker trip, or any wet-electrical condition.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: September 23, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Samsung.

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