LG Refrigerator Error Code rS E

The rS E code indicates a refrigerator compartment temperature sensor error. The Main PCB has detected that the sensor circuit is reading a short, open, or out-of-range resistance value. This means the control board cannot reliably monitor the fresh food section temperature, which can affect how the refrigerator cools. A loose connection at CON7 on the Main PCB is the most common starting point for diagnosis.

Operating the refrigerator with an active rS E code carries risk because the control board cannot accurately monitor compartment temperature. Food safety may be compromised if the refrigerator overcools, undercools, or cycles incorrectly as a result of the missing sensor data. It is best to address the fault promptly and monitor food temperatures closely in the meantime.

Performing a power reset by unplugging the refrigerator for a few minutes may temporarily clear the rS E code, but the fault will return if the underlying cause has not been corrected. A reset is useful for confirming whether the fault is intermittent or persistent, but it is not a fix. The sensor circuit must be inspected and any defective wiring or components must be repaired or replaced for the code to stay clear.

A homeowner comfortable working around appliances can safely check for a loose wiring connector at the Main PCB, which resolves the fault in many cases. However, resistance testing the thermistor, inspecting the full wiring harness, and replacing components typically requires basic electrical knowledge and a multimeter. If you are not comfortable working inside the refrigerator's control compartment, a qualified appliance technician is recommended.

If the repair only requires reseating a loose connector, there may be no parts cost at all, though a service call fee typically applies if a technician is involved. Replacing the thermistor sensor is generally an affordable repair, with parts costs typically ranging from around $15 to $50 depending on the model. If the Main PCB requires replacement, the total repair cost including parts and labor can range from $150 to $400 or more.