Samsung Oven Error Code C-22 — Temperature Sensor Open Circuit
What this means
The C-22 error code indicates the oven temperature sensor circuit is open, meaning the control board detects no signal from the sensor. This is the opposite of C-20 (short) — instead of reading too low, the resistance is infinitely high (open line). This is caused by a burned-out sensor, a disconnected wire, or a broken wire in the harness.
Alternate codes: C22
Step-by-step fix
4 stepsCheck the sensor wire connection
Unplug the oven and check the wire connector at the temperature sensor. It may have come loose or disconnected. Reseat the connector firmly.
A loose connector is the easiest fix for this error.
Test the temperature sensor
Disconnect the sensor wires and test with a multimeter set to resistance. At room temperature, it should read approximately 1,100 ohms. An OL (open line) reading means the sensor is burned out.
Check at the control board end of the harness too — if the sensor reads good but the board end reads OL, there's a wire break.
Inspect the wiring harness
Trace the wire harness from the sensor to the control board. Look for any breaks, cuts, or heat-damaged sections.
Wires passing near the oven cavity are particularly susceptible to heat damage.
Replace the temperature sensor
If the sensor is open, replace it. Remove the mounting screw, pull the old sensor out, install the new one, and reconnect the wire harness.
This is the same replacement procedure as for the C-20 error.
When to call a professional
If both the sensor and wiring test good, the control board's sensor input circuit may be damaged. A technician should diagnose the board.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Oven Temperature Sensor
Part #DG32-00002B · $10–$25
If sensor reads OL (open line) on multimeter
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