LG Refrigerator Error Code Er r2

Er r2 indicates that the Main PCB has detected a fault with Refrigerator Sensor 2, the secondary temperature sensor in the fridge compartment. The fault is caused by either a short circuit or a disconnection in the sensor circuit. As a result, the ICE PLUS indicator will not light and temperature regulation may be affected.

The refrigerator may continue to run with Er r2 active, but temperature control in the fresh food compartment could be less accurate than normal. This creates a risk of food spoilage if the sensor failure is causing the system to under-cool or over-cool. It is best to address the error promptly and monitor food temperatures in the meantime.

If only the sensor needs replacement, parts and labor typically range from around $100 to $250 depending on your location and service provider. If the Main PCB is at fault, repair costs can range from $200 to $450 or more, since control boards are among the more expensive refrigerator components. Getting a diagnostic visit before committing to a repair helps determine which part is actually at fault.

Some cases of Er r2 can be resolved without professional help, particularly if the cause is simply a loose connector. Start by unplugging the refrigerator, locating the connector at CON7 on the Main PCB, and firmly reseating it. If the error returns, testing sensor resistance at CON7 pins 17-18 requires a multimeter and some technical comfort, but is a manageable task for experienced DIYers.

A reset by unplugging the unit for a few minutes may temporarily clear the error code, but if the underlying sensor fault or wiring problem still exists, the code will return. A reset alone is not a fix. The sensor circuit needs to be inspected and repaired before the error will stay cleared.