LG Range Error Code E-0A

The E-0A error code on an LG range indicates an oven overheating condition, triggered when the oven cavity temperature reaches or exceeds 650 degrees Fahrenheit (343 degrees Celsius) during any standard cooking function. This threshold is a safety limit built into the control system to protect the oven cavity, internal wiring, and surrounding cabinetry from heat damage. Critically, this error is distinct from the self-clean cycle, which routinely operates at extreme temperatures. When E-0A appears during normal baking, broiling, or roasting modes, the control board interprets the temperature reading as a dangerous fault and shuts down the heating circuit.

The primary component involved in detecting this fault is the oven temperature sensor, a thermistor-type probe mounted inside the oven cavity. At room temperature, a properly functioning sensor should measure approximately 1080 ohms of resistance. Readings significantly outside this value, whether too high or too low, will cause the control board to misread the actual oven temperature, potentially commanding the heating elements to run beyond safe limits. A sensor that reads abnormally low resistance, for example, could falsely indicate a cool oven and allow overheating to occur before the control reacts.

Beyond a faulty sensor, the cause may also lie in the wiring harness connecting the sensor to the control board, or in the control board itself mismanaging the heating elements. Diagnosing the sensor first is the correct starting point because it is the most common cause and the most straightforward to test. Access requires removing the upper rear cover panel and disconnecting the two harness connectors to the sensor for resistance measurement.