LG Refrigerator Error Code 15

Error code 15 on an LG refrigerator signals a problem with the freezer compartment temperature sensor system. The control board has detected that the sensor reading falls outside the valid range, meaning the signal is not lower than 122°F or higher than -58°F. This is caused by a wiring cut, short-circuit, contact failure, missing sensor housing, or a defective sensor. It is a sensor circuit fault, not necessarily an indication of an actual temperature problem in the freezer.

Error code 15 means the freezer compartment sensor is not reporting reliable data, so the control board cannot accurately regulate freezer temperature. This puts food safety at risk since the refrigerator may not maintain proper cooling. It is best to address the fault promptly and avoid relying on the appliance to keep frozen foods at safe temperatures until the issue is resolved.

A reset may temporarily clear the error code from the display, but if the underlying fault in the sensor circuit has not been corrected, the code will return once the control board runs its sensor check again. Resetting is useful to confirm whether the fault is intermittent, but it is not a fix. The wiring, connector, sensor housing, and sensor itself need to be inspected and repaired or replaced as needed to permanently resolve the error.

Some causes of error code 15 can be addressed without professional help. Reseating a loose connector or identifying a visibly damaged wire is within reach for a careful DIYer. However, if the wiring harness needs repair or the sensor requires replacement, basic electrical and appliance disassembly skills are needed. If you are uncomfortable working with refrigerator wiring and components, a qualified technician is the safer choice.

If only a connector needs reseating, there may be no parts cost at all. A replacement F compartment temperature sensor typically costs in the range of $15 to $50 for the part. If a professional technician is needed, labor charges generally bring the total repair cost to somewhere between $100 and $250, depending on your location and the extent of the wiring damage.