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Error code reference

LG Range Error Code E-08

Oven heating error

LG codesLG range codes

Oven heating error — temperature does not reach 125°F (52°C) within 10 minutes during Self Clean, Convection Bake, Convection Roast, or Broil.

First step from the service manual

Disconnect power, remove upper rear cover, disconnect harness connectors to oven temp sensor and measure resistance (10.5KΩ at room temperature). Replace if faulty.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What E-08 means on a LG range

The E-08 error code on an LG range indicates an oven heating failure during high-demand cooking modes. Specifically, the oven control board has detected that the cavity temperature did not reach 125°F (52°C) within the first 10 minutes of operation during Self Clean, Convection Bake, Convection Roast, or Broil cycles. These modes place the heaviest thermal load on the system, so the control board monitors early temperature rise as a gate check to confirm the heating circuit is functioning before allowing the cycle to continue.

The oven temperature sensor (also called the RTD or resistance temperature detector) is the first component to evaluate. At room temperature, this sensor should measure approximately 10.5 kilohms. A reading significantly above or below this value indicates a faulty sensor that is feeding the control board inaccurate temperature data, causing the board to incorrectly assess heating progress. Diagnosing this requires disconnecting power, removing the upper rear cover panel, and unplugging the sensor harness connector before testing resistance with a multimeter.

Beyond the sensor itself, the root cause may also lie in the heating elements, wiring connections, or the control board. A failed bake element, broil element, or a broken connection in the high-voltage circuit can prevent the oven from generating heat altogether, triggering E-08. In gas models, a faulty igniter or gas valve solenoid could similarly restrict heat output. Loose or corroded harness connectors along the sensor or element circuits are also worth inspecting, as poor contact can produce erratic resistance readings or interrupt power delivery to the elements.

Source: manufacturer service documentation.

Common causes of E-08

  1. 01

    Faulty oven temperature sensor

    Part replacement

    The temperature sensor is the first component to test. A correctly functioning sensor reads approximately 10.5 kilohms at room temperature. A reading outside this range means the sensor is sending inaccurate data to the control board, causing a false heating failure detection.

  2. 02

    Failed bake or broil heating element

    Part replacement

    If an electric heating element has burned out or developed an open circuit, the oven will produce little to no heat and cannot reach the 125°F threshold within the required 10 minutes. Visually inspect elements for visible breaks, blistering, or burn marks.

  3. 03

    Loose or damaged wiring harness connections

    Wiring / connection

    Corroded or disconnected harness connectors at the temperature sensor or heating element terminals can interrupt the signal or power circuit. Inspect all connectors at the rear of the oven cavity and at the control board for signs of damage or poor contact.

  4. 04

    Defective oven control board

    Part replacement

    If the control board is not correctly reading sensor input or not delivering power to the heating elements, it can trigger E-08 even when all other components are functional. This is typically diagnosed after all other components have been confirmed good.

  5. 05

    Faulty gas igniter or gas valve (gas range models)

    Part replacement

    On gas models, a weak or failed igniter may not generate enough heat to open the gas valve, preventing proper burner ignition. A gas valve solenoid failure can similarly block gas flow and cause insufficient oven heating.

See the test procedure for each cause

Frequently asked questions about E-08

What does E-08 mean on a LG range?
E-08 means the oven failed to reach 125°F (52°C) within 10 minutes of starting a Self Clean, Convection Bake, Convection Roast, or Broil cycle. The control board monitors early temperature rise as a safety and performance check, and when the oven does not heat fast enough, it shuts down and displays this code. The most common causes are a faulty oven temperature sensor, a failed heating element, or a wiring issue in the heating circuit.
Can I fix E-08 on my LG range myself?
A knowledgeable DIYer can perform some of the diagnostics, including disconnecting power, removing the upper rear cover, and testing the oven temperature sensor resistance with a multimeter. The sensor should read approximately 10.5 kilohms at room temperature, and replacing it is a manageable repair. However, diagnosing and replacing a heating element, control board, or gas components involves working with high-voltage or gas systems, which many homeowners prefer to leave to a qualified technician.
Is it safe to use my LG range while E-08 is displayed?
You should not attempt to run oven functions that triggered the error, specifically Self Clean, Convection Bake, Convection Roast, or Broil, while the fault is active. The oven is not heating correctly, and continuing to use it in this state will not produce reliable cooking results. Surface burners on a gas or electric range may still be operable, but the oven should be inspected and repaired before further use.
Will resetting the power clear the E-08 error on my LG range?
Disconnecting power for several minutes may temporarily clear the E-08 code and allow the oven to attempt another cycle. However, if the underlying component failure is still present, the error will return as soon as the oven tries to heat and again fails to reach 125°F within 10 minutes. A power reset is useful for ruling out a one-time control board glitch but is not a fix for a faulty sensor, element, or wiring problem.
How much does it cost to repair an LG range E-08 error?
Repair costs vary depending on the failed component. An oven temperature sensor is typically the least expensive fix, with parts generally ranging from $20 to $60 and labor adding $75 to $150 if a technician is hired. A heating element replacement usually falls in the $50 to $150 range for parts, with similar labor costs. A control board replacement is the most expensive scenario, with parts potentially ranging from $150 to $350 or more depending on the model, plus labor.

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