LG Refrigerator Error Code Po

The Po code on an LG refrigerator stands for abnormal supplied power voltage. It means the control board has detected that the incoming AC voltage is outside the acceptable operating range, which is approximately within 85% of the rated supply voltage. The refrigerator may stop cooling or limit operation until the voltage returns to a safe level. This is a protective feature designed to prevent damage to the compressor and electronics.

A persistent Po code can indicate an electrical condition that is potentially harmful to both the appliance and your home wiring. Sustained low voltage can cause the compressor to overheat and fail, while high voltage can damage the control board and other electronics. If you see signs of scorching at the outlet, notice burning smells, or the outlet feels warm, stop using it immediately and contact an electrician.

The cost depends entirely on the root cause. If the problem is a shared circuit or a utility supply issue, there may be no parts cost at all, though an electrician visit could range from around $75 to $200 or more depending on labor rates and the work required. Replacing a damaged power cord is typically an inexpensive repair, often in the $20 to $60 range for parts. If the main control board has failed and is triggering a false Po code, board replacement can range from $150 to $400 or more including parts and labor.

Start by measuring the AC voltage at the wall outlet using a multimeter while the refrigerator is plugged in. The reading should be close to the rated voltage and must not fall outside the 85% tolerance range. If voltage is low or inconsistent, check for a shared or overloaded circuit, a loose outlet or breaker connection, or contact your utility provider if the issue is with the incoming supply. If the outlet voltage is normal, the power cord or control board may need inspection.

Unplugging the refrigerator for a few minutes and plugging it back in may temporarily clear the Po code, but the error will return if the underlying voltage problem has not been corrected. A reset is only useful as a confirmation step after the power supply issue has been identified and fixed. Do not rely on repeated resets as a solution, as operating with abnormal voltage can cause long-term damage to the compressor and electronics.