Samsung Oven Error Code E-28 — Temperature Sensor Short Circuit
What this means
Error E-28 indicates the oven temperature sensor (thermistor) has a short circuit, reading below expected resistance values. This gives the control board false temperature readings, causing the oven to not heat properly or to overheat. The sensor should read approximately 1,080 ohms at room temperature.
Step-by-step fix
4 stepsTest the sensor
Disconnect the temperature sensor and test with a multimeter. A reading well below 1,080 ohms at room temperature confirms a short.
Check wiring
Inspect the sensor wiring for stripped, pinched, or touching wires that could cause a short.
Wires touching metal inside the oven cavity can create a short.
Replace the sensor
If the sensor is shorted, replace it.
Test the oven
Set to 350°F and verify proper heating after replacement.
When to call a professional
If the wiring is damaged inside the oven wall or if the control board is suspect.
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.
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