LG Refrigerator Error Code Cp

The Cp code means the linear compressor failed to start during its startup sequence. The refrigerator's control board monitors the compressor's startup and throws this code when the compressor does not reach operating parameters in time. This fault will cause the unit to stop cooling. Diagnosis involves checking compressor winding resistance at the CON2 connector, the overload protector, and the wiring harness.

No. When the Cp code is active, the compressor is not running and the refrigerator is not cooling. Food safety is at risk if the temperature inside rises above safe levels. The refrigerator should be emptied of perishables and service should be arranged promptly.

A power reset may temporarily clear the Cp code and allow the refrigerator to attempt another startup. However, if the underlying cause, such as a failed compressor, a bad OLP, or a wiring fault, has not been corrected, the code will return. A reset is useful for ruling out a one-time glitch but is not a fix for a genuine component failure.

Some causes of the Cp code, such as a loose or corroded connector at the CON2 housing, can be addressed by a knowledgeable DIYer who is comfortable working around appliance wiring. However, testing compressor resistance with a multimeter and replacing the OLP, compressor, or control board typically requires technical experience and proper tools. Because the compressor circuit involves capacitors and high-voltage components, caution is strongly advised.

Repair costs vary significantly depending on the root cause. Wiring or OLP repairs may run between $100 and $250 including labor. Control board replacement typically falls in the $200 to $450 range. Compressor replacement is the most expensive outcome, often ranging from $400 to $900 or more depending on labor rates and part availability.