Samsung Range Error Code E-28

E-28 on a Samsung range means the oven temperature sensor has shorted, with its resistance dropping below 930 to 940 ohms. The control board detects this condition 20 seconds after the oven starts and triggers the fault to prevent inaccurate temperature control. A properly functioning sensor should measure approximately 1080 ohms at room temperature.

No, you should not use the oven while E-28 is active. A shorted temperature sensor means the control board cannot reliably monitor oven temperature, which could result in uncontrolled heating. Stop using the oven and complete the diagnosis and repair before resuming normal operation.

If the oven temperature sensor is the cause, replacement sensor parts typically range from around 20 to 60 dollars depending on the model. If a professional technician is hired for diagnosis and replacement, total repair costs including labor generally fall in the range of 100 to 250 dollars. A control board replacement, if needed, is considerably more expensive and may cost 150 to 400 dollars or more for parts alone.

A knowledgeable DIYer can diagnose E-28 by disconnecting power, removing the back cover, and using a multimeter to measure the sensor's resistance at its harness connector. If the sensor reads significantly below 1080 ohms at room temperature, replacing the sensor is a straightforward repair involving disconnecting the harness and removing the probe from the oven cavity. If the sensor measures correctly, tracing the wiring harness for damage or inspecting connectors for corrosion is the next step.

Disconnecting power briefly may temporarily clear the fault display, but E-28 is a sensor fault that is re-evaluated 20 seconds after the oven starts operating. If the underlying short in the sensor or wiring remains, the error will return shortly after the oven is turned on. A reset alone cannot resolve the issue without addressing the faulty component.