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Error code reference

Samsung Range Error Code E-28

Oven sensor shorted (resistance under 930-940 ohms), detected 20 seconds after oven starts working.

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Oven sensor shorted (resistance under 930-940 ohms), detected 20 seconds after oven starts working.

First step from the service manual

Disconnect power, open back cover, disconnect sensor harness from control, measure sensor resistance (should be 1080 ohms at room temperature).

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What E-28 means on a Samsung range

The E-28 error code on a Samsung range indicates that the oven temperature sensor has shorted, meaning its resistance has dropped below the acceptable threshold of 930 to 940 ohms. The oven sensor, also called an RTD (resistance temperature detector), works by changing its electrical resistance in direct proportion to temperature. At room temperature, a properly functioning sensor should read approximately 1080 ohms. When the control board detects a resistance reading below 930 to 940 ohms, it interprets this as a shorted sensor condition and triggers the E-28 fault. Critically, this fault is not detected immediately upon startup but is confirmed 20 seconds after the oven begins operating, allowing the control board to distinguish a genuine short from a transient electrical fluctuation.

The oven sensor is typically mounted inside the oven cavity, with its probe extending through the back wall and its wiring routed to the main control board. A short can occur within the sensor probe itself, at the connector pins, or anywhere along the wiring harness between the sensor and the control. Damaged insulation caused by heat exposure, pinched wires, or moisture intrusion can all create an unintended low-resistance path that the control reads as a sensor short. In some cases the sensor itself has failed internally, which is the most common source of the fault.

Diagnosing E-28 requires disconnecting power to the appliance, removing the back cover to access the sensor harness, and using a multimeter to measure resistance across the sensor terminals. A reading significantly below 1080 ohms at room temperature confirms sensor failure. If the sensor measures correctly, the wiring harness and control board connections should be inspected for damage, corrosion, or shorts to ground.

Source: manufacturer service documentation.

Common causes of E-28

  1. 01

    Failed oven temperature sensor

    Part replacement

    The sensor probe itself has developed an internal short, causing its resistance to fall below the 930 to 940 ohm threshold. Measuring resistance at the sensor terminals with a multimeter will show a value well below the expected 1080 ohms at room temperature.

  2. 02

    Damaged sensor wiring harness

    Part replacement

    Heat exposure or physical contact with oven components can melt or crack the insulation on the sensor wires, allowing bare conductors to contact each other or a ground surface and creating the shorted condition the control detects.

  3. 03

    Corroded or shorted connector pins

    Wiring / connection

    The harness connector at the control board or at the sensor itself can accumulate corrosion or suffer pin damage that creates a low-resistance path between terminals. Inspecting and cleaning the connector contacts may resolve the fault if the sensor resistance measures correctly.

  4. 04

    Moisture intrusion in sensor or wiring

    Wiring / connection

    Spills or steam that reach the sensor connector or wiring can temporarily lower resistance dramatically. After a thorough drying period, resistance should return to normal if no permanent damage occurred.

  5. 05

    Faulty control board

    Part replacement

    If the sensor and its wiring both measure correctly at approximately 1080 ohms with no visible damage, the control board's sensor input circuit may be misreading the resistance signal. This is the least common cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about E-28

What does E-28 mean on a Samsung range?
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.
Can I fix the E-28 error myself?
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.
Is it safe to use my oven while E-28 is displayed?
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.
Will resetting the Samsung range clear the E-28 error?
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.
How much does it cost to repair a Samsung range E-28 error?
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.

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