LG Refrigerator Error Code Er F2

Er F2 indicates a fault with refrigerator sensor 2, a thermistor that monitors temperature inside the fresh food compartment. The control board has detected that the sensor's resistance is shorted, open, or outside the expected operating range. The error typically points to a loose connector at CON6 pins 7 and 8, a failed thermistor, or a damaged wiring harness. Diagnosing the connector and measuring sensor resistance are the first steps to identifying the root cause.

A failed temperature sensor means the control board may not accurately regulate cooling in the fresh food section. This can result in the compartment running too warm, which creates a food safety risk, or running too cold, which can freeze fresh food. It is best to address the error promptly and use a standalone thermometer to monitor temperatures if you need to continue using the unit briefly before the repair.

Unplugging the refrigerator for a few minutes and restoring power may temporarily clear the error code, but it will return if the underlying fault is still present. A reset is useful to confirm whether the error is intermittent or persistent, and to check if a loose connector was the only issue after reseating it. A permanent resolution requires identifying and correcting the root cause, whether that is a bad connection, a failed sensor, or damaged wiring.

Checking and reseating the connector at CON6 pins 7 and 8 is a straightforward task that most handy homeowners can perform after unplugging the refrigerator. Measuring thermistor resistance with a multimeter is also a manageable DIY step. If the sensor itself needs replacement, the repair remains relatively accessible. However, if the fault traces back to the main control board, professional diagnosis is recommended to avoid unnecessary parts costs.

If the fix is simply reseating a loose connector, there is no parts cost involved. A replacement thermistor sensor typically costs between $15 and $50 depending on the specific part. If a wiring harness section needs replacement, parts can range from $20 to $80. A main control board replacement is the most expensive scenario, with parts generally ranging from $100 to $300, plus labor if a technician is performing the repair.