LG Refrigerator Error Code 19

Error code 19 on an LG refrigerator indicates a CF compartment sensor system abnormality. The control board has detected that the sensor is reporting a temperature outside the acceptable range, specifically not lower than 122°F and not higher than -58°F. This typically points to a wiring fault, connection problem, or a failed sensor rather than an actual temperature event in the compartment.

A power reset may temporarily clear the display of error code 19, but the code will return if the underlying wiring or sensor problem is not repaired. Resetting does not fix a broken wire, failed connector, or defective sensor. A reset can be useful to confirm whether the fault is intermittent, but it should not be considered a solution.

Repair costs vary depending on the root cause. A simple connector reseating or wiring repair may cost between $75 and $150 in labor if a technician performs it. Replacing the CF compartment temperature sensor typically adds a parts cost in the range of $20 to $60. If the control board is found to be faulty, total repair costs could range from $200 to $450 or more depending on the model and local labor rates.

Some causes of error code 19 are DIY-accessible, such as reseating a loose connector or inspecting the wiring harness for visible damage. However, testing sensor resistance, tracing a short circuit, or replacing the sensor itself may require a multimeter and some comfort working with refrigerator components. If the wiring and sensor appear intact and the error persists, a qualified technician should evaluate the control board.

Error code 19 indicates the refrigerator's control system cannot accurately monitor the CF compartment temperature, which means the appliance may not be cooling that section properly or reliably. Food safety could be at risk if the compartment temperature is not being regulated correctly. It is advisable to check the actual temperature with an independent thermometer and address the fault promptly.