LG Refrigerator Error Code M-Eva sensor failure (MEAT OPTI off)

This code indicates that the LG refrigerator's control system has detected a failure in the Opti zone evaporator sensor, which monitors temperature in the specialized meat storage compartment. The fault is caused by a cut wire or a short circuit in the sensor wiring. The display shows all LEDs on except the MEAT OPTI LED, which is the specific visual pattern used to identify this error. The Opti zone cannot regulate temperature correctly until the fault is resolved.

A simple power reset will not permanently clear this code because it is triggered by an active electrical fault, either a broken wire or a short circuit. The code will return as soon as the refrigerator completes its startup diagnostics and detects the same wiring or sensor problem. The underlying fault must be diagnosed and repaired before the error will stay cleared.

If the repair involves only reseating a connector or repairing a damaged wire, costs may be relatively low, primarily covering a service call in the range of $75 to $150. If the Opti zone Eva sensor itself needs replacement, parts and labor combined typically range from $100 to $250 depending on your location and the specific model. Getting a diagnosis from a qualified technician first will help clarify exactly what components need to be addressed.

Start by inspecting the wiring connected to the Opti zone Eva sensor for any visible damage such as cuts, pinching, or frayed insulation. Check the connectors for corrosion or loose fitment and reseat them firmly. If the wiring appears undamaged, use a multimeter to test continuity along the harness and check the sensor's resistance to determine whether the sensor itself needs replacement. A qualified technician can complete these tests if you are not comfortable working with electrical components.

The rest of the refrigerator and freezer sections will generally continue to operate, but the Opti zone compartment cannot reliably maintain its intended temperature conditions without a functioning sensor. Food stored in the Opti zone drawer, particularly raw meat, may not be kept at the correct temperature. It is best to avoid relying on that compartment for sensitive items until the sensor issue is repaired.