Samsung Range Error Code E-27

E-27 means the oven temperature sensor circuit has opened, with the control board detecting a resistance above 2950 ohms from the sensor. This fault is detected 20 seconds after the oven starts operating. The sensor, which should read approximately 1080 ohms at room temperature, has either failed internally, lost a wiring connection, or developed a harness fault. The oven will not operate normally until the underlying cause is corrected.

You should not attempt to use the oven when E-27 is active. The error indicates the control board cannot read oven temperature, which means it cannot regulate heat safely or accurately. Continuing to run the oven without a functioning temperature sensor risks overheating. The range's surface burners may still function normally, but the oven should remain off until the fault is resolved.

Oven temperature sensor parts typically range from around $20 to $65 depending on the specific model. If a technician performs the repair, total costs including labor generally fall between $100 and $250 for a sensor replacement. A wiring harness repair adds some labor time, while a control board replacement can bring costs to the $200 to $400 range or higher. Getting a diagnostic visit quote first is a good way to confirm which component is at fault before committing to repair costs.

A knowledgeable DIYer can diagnose and often fix E-27 by disconnecting power, removing the back cover, and using a multimeter to test the sensor resistance at the harness connector. If the sensor reads significantly above 1080 ohms or shows an open circuit, replacing the oven sensor is a straightforward repair that involves removing one or two screws inside the oven cavity and swapping the connector. Wiring harness repairs or control board replacement are more involved and may warrant a professional technician.

Disconnecting power briefly may temporarily clear the error code display, but E-27 will return within 20 seconds of the oven starting again if the underlying fault still exists. Because the control board actively monitors sensor resistance each time the oven operates, the code is not a stored fault that can be permanently cleared by a reset alone. The sensor, wiring, or control board issue must be repaired first.