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Appliance Error Codes

What Does F2 Error Mean on LG LSGL6335F?

Error F2 on LG LSGL6335F: Oven temperature sensor short circuit — thermistor shorted for more than 1 minut. Follow the troubleshooting steps below to diagnose and fix this range issue. The F2 error code on your LG LSGL6335F range indicates the oven temperature sensor has a short circuit — its resistance has been below the minimum threshold for more than 1 minute during a cooking cycle. The control board cannot accurately track oven temperature with a shorted sensor. F2 is the short-circuit counterpart to F1 (open circuit), and the diagnostic approach is similar. ## What Does F2 Mean? F2 on the LSGL6335F indicates the oven temperature sensor resistance has dropped well below the normal range, indicating a short within the sensor probe itself or in the sensor wiring. While a normal sensor reads approximately 1,080 ohms at room temperature, a shorted sensor reads near zero ohms — effectively creating a direct short across the thermistor circuit. A shorted sensor typically reads excessively high temperatures, because the control board interprets the abnormally low resistance as extremely high heat. This can cause the board to cut power to the heating elements as a safety measure, even when the oven is cold. Moisture in the sensor probe, physical damage to the sensor, or a wiring short caused by a wire rubbing against a metal surface are the most common causes of F2. ## Possible Causes 1. Internal short in the oven temperature sensor probe — the thermistor element has shorted internally 2. Moisture or food residue entering the sensor probe and creating a conductive path 3. Pinched or shorted sensor wiring in the harness — two conductors touching or shorting to a grounded metal surface 4. Sensor harness routed too close to the heating element and the insulation has melted 5. Failed control board sensor circuit — rare ## Troubleshooting Steps | Step | Action | Expected Result | |------|--------|-----------------| | 1 | Press CLEAR/OFF and trip the circuit breaker for 30 seconds; restore power; if F2 clears, monitor for recurrence | F2 does not return after reset — fault was transient | | 2 | Disconnect power and locate the oven temperature sensor in the upper-rear corner of the oven cavity; disconnect its harness connector | Sensor is isolated from the circuit | | 3 | Measure sensor resistance with a multimeter — a reading well below 900 ohms at room temperature confirms a short in the probe; replace the sensor | Sensor resistance confirms short — below specification | | 4 | If the sensor tests approximately 1,080 ohms, disconnect the harness at the control board end and test continuity between the two conductors in the harness; a near-zero reading between conductors confirms a short in the wiring | Harness conductors are isolated — no short between them | | 5 | Inspect the full harness path for any pinch point where wires contact a metal edge or heating element; replace any damaged harness section | Harness is undamaged with no short | | 6 | Install the replacement sensor or repaired harness, restore power, and run a bake cycle to confirm F2 has cleared | Oven heats normally and F2 does not return | Disconnect power before testing the sensor or harness. The oven heating elements operate at 240V (electric models) and hot gas pressure is present in gas models when connected to supply. ## When to Call a Technician Contact LG authorized service if: - The sensor and harness test good but F2 persists — the control board sensor circuit has failed

  • Burn marks or melted insulation are visible on the sensor harness near the oven cavity Professional repair costs for F2 issues typically range from $80 to $250 depending on the specific component and your service region. ## Frequently Asked Questions ### How is F2 different from F1 on my LG range? F1 indicates an open circuit (thermistor broken — resistance too high, reads OL). F2 indicates a short circuit (thermistor shorted — resistance too low, reads near zero). Both errors disable oven heating and both are diagnosed with a multimeter. F1 usually means a physically broken sensor probe; F2 is more often caused by moisture, a pinched wire, or internal probe shorting.

Can moisture cause the F2 error on an LG range? Yes. Steam from boiling water on the cooktop can enter the oven cavity and condense inside the temperature sensor probe over time, creating a conductive path inside the probe that shorts it. If F2 appears after heavy steaming or boiling operations, dry out the oven thoroughly by leaving it on at 250°F for 30 minutes (if it will operate in that state) before proceeding with sensor testing.

Section titled “Can moisture cause the F2 error on an LG range? Yes. Steam from boiling water on the cooktop can enter the oven cavity and condense inside the temperature sensor probe over time, creating a conductive path inside the probe that shorts it. If F2 appears after heavy steaming or boiling operations, dry out the oven thoroughly by leaving it on at 250°F for 30 minutes (if it will operate in that state) before proceeding with sensor testing.”

Does F2 mean my LG oven is dangerously overheating? Not typically. A shorted sensor reads an abnormally low resistance, which the control board interprets as an abnormally high temperature. The board responds by cutting power to the heating elements — so the oven actually stops heating rather than overheating. F2 usually causes the oven to fail to heat rather than to overheat.

Section titled “Does F2 mean my LG oven is dangerously overheating? Not typically. A shorted sensor reads an abnormally low resistance, which the control board interprets as an abnormally high temperature. The board responds by cutting power to the heating elements — so the oven actually stops heating rather than overheating. F2 usually causes the oven to fail to heat rather than to overheat.”

After replacing the sensor for F2, should I also replace the harness? Only replace the harness if it tested shorted or shows visible damage such as melted insulation or pinched wiring. A harness that tests good with correct conductor isolation does not need replacement. Replace only the component that tested defective. Reference: LG official support documentation (lg.com/us/support) and authorized service guides ### Is it safe to keep using my LG LSGL6335F with error F2? If error F2 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the range with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error F2 on a LG LSGL6335F? Repair costs for error F2 on the LG LSGL6335F range depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a LG-authorized service provider for an accurate estimate based on your specific situation. ### What does error code F2 mean on a LG range? Error code F2 on LG range models indicates Oven temperature sensor short circuit — thermistor shorted for more than 1 minute during cooking. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.

Section titled “After replacing the sensor for F2, should I also replace the harness? Only replace the harness if it tested shorted or shows visible damage such as melted insulation or pinched wiring. A harness that tests good with correct conductor isolation does not need replacement. Replace only the component that tested defective. Reference: LG official support documentation (lg.com/us/support) and authorized service guides ### Is it safe to keep using my LG LSGL6335F with error F2? If error F2 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the range with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error F2 on a LG LSGL6335F? Repair costs for error F2 on the LG LSGL6335F range depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a LG-authorized service provider for an accurate estimate based on your specific situation. ### What does error code F2 mean on a LG range? Error code F2 on LG range models indicates Oven temperature sensor short circuit — thermistor shorted for more than 1 minute during cooking. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.”