LG Washer Error Code 8C

The 8C code on an LG washer indicates a MEMS PBA error or data communication fault. The MEMS PBA is a sensor board that monitors drum movement and related data. The error can also point to a wiring connection problem between the MEMS PBA and the main control board, or a malfunction in the silver nano component on applicable models.

A power reset by unplugging the washer for a few minutes may temporarily clear the code, but if the underlying fault with the MEMS PBA or wiring is still present, the error will return. A reset alone is not a fix and should only be used as part of initial diagnosis to confirm whether the fault is persistent.

If the repair requires only reseating a wire connector, the cost could be minimal or nothing beyond your time. If the MEMS PBA needs replacement, parts and labor combined typically range from around $100 to $300 depending on the model and service rates in your area. A main PBA replacement, if required, would be a higher cost repair in the $200 to $450 range.

In some cases, yes. Start by checking all wire harness connections to and from the MEMS PBA, as a loose or unseated connector is often the cause. If the connections are secure and undamaged, the MEMS PBA board itself likely needs to be replaced, which is a more involved repair but still within reach for experienced DIYers comfortable with disassembling the washer cabinet.

It is not recommended to continue running the washer with an active 8C error. The MEMS PBA provides sensor data that the machine relies on to control drum operation safely. Running the washer without reliable sensor feedback could potentially lead to further component damage or improper wash cycle behavior.