LG Dishwasher Error Code 5C

The 5C code on an LG dishwasher signals a drain issue, meaning the machine could not successfully drain water within the expected cycle time. It is triggered by the control board when drainage is not confirmed, and it stops the cycle to protect the appliance. Causes range from a kinked drain hose or blocked filter to a defective drain pump. Checking the Information Code history through the test mode can help confirm the fault pattern.

You should not continue running cycles while the 5C code is active. The dishwasher halts operation when this error appears specifically to prevent standing water from overflowing or the drain pump from running dry. Using the machine in this condition risks water damage to your kitchen floor or cabinetry. Resolve the drain issue before resuming normal use.

If the fix is a simple installation correction such as removing a disposal knockout plug or straightening a drain hose, the cost is effectively nothing. Cleaning a clogged filter costs only time. If the drain pump needs replacement, parts typically run in the range of $40 to $120 depending on the model, with professional labor adding $100 to $200 on top of that. Diagnosing the exact cause before ordering parts will help avoid unnecessary expenses.

Start by inspecting the drain hose for kinks, bends, or crushing behind the unit and straighten it if needed. Next, check that the knockout plug inside the garbage disposal inlet was removed if your dishwasher drains into a disposal. Clean the drain filter and sump area thoroughly to remove any debris buildup. If all of these checks pass and the error returns, the drain pump likely needs to be tested and potentially replaced.

A reset may temporarily clear the 5C code from the display, but it will return if the underlying drain problem is not corrected. Resetting without fixing the cause only delays the fault and does not resolve blocked hoses, clogged filters, or faulty components. Address the root cause first, then reset the machine to confirm the error is gone for good.