LG Washer Error Code C6

The C6 code on an LG washer indicates a drain check fault, meaning the machine has detected a problem with the drain pump system. Possible causes include a jammed or damaged impeller, a clogged drain hose, foreign material inside the pump housing, incorrect voltage, or a failed pump motor. The control board triggers this code when it determines that drainage is not functioning correctly. Measuring the pump motor resistance (approximately 8 ohms expected) and inspecting the pump for debris are the recommended starting points.

It is not recommended to continue running the washer while C6 is active. The machine has stopped the cycle because it cannot drain properly, and forcing additional cycles risks water remaining in the drum, potential overflow, or further damage to the pump motor. Resolve the fault before resuming normal use.

A power reset by unplugging the washer for a few minutes may temporarily clear the C6 code, but it will return if the underlying problem is not resolved. The drain pump system fault that triggered the code must be physically corrected, whether that means removing a blockage, replacing the pump, or correcting the drain hose routing. Relying on resets without addressing the root cause will not result in a lasting fix.

Start by disconnecting power to the washer and locating the drain pump filter, usually behind a small access panel at the front bottom of the machine. Remove and inspect the filter and pump housing for any foreign objects such as coins or lint. Next, check the drain hose for kinks or blockages along its full length. If the pump is clear but the error persists, use a multimeter to test the pump motor resistance at approximately 8 ohms; a reading far outside this range points to a failed pump that needs replacement.

If the cause is simply a foreign object in the pump or a clogged hose, the repair can be done at no parts cost. If the drain pump motor needs to be replaced, parts typically range from $30 to $90 depending on the model, with professional labor adding $80 to $150 or more depending on your area. Diagnosing the root cause first helps avoid unnecessary part purchases.