LG Washer Error Code dC4

The dC4 code on an LG washer signals that the inner door of the upper washer compartment is detected as open or unlatched. The washer will not operate while this condition is present. It is a safety interlock that prevents the machine from running with an unsecured door. Closing the inner door firmly and pressing START/PAUSE is the first step to clear the error.

No, the washer will not start or continue a cycle while the dC4 code is active. This is by design, as running a wash cycle with an unsecured inner door could allow water to escape the compartment. Resolve the door closure issue before attempting to operate the machine.

If the fix is simply closing the door properly, there is no cost involved. If the door latch assembly or door sensor needs replacement, parts typically range from around $15 to $80 depending on the specific component, with additional labor costs if a technician is needed. Wiring repairs can vary depending on the extent of the damage found during inspection.

Start by opening and firmly re-closing the upper washer inner door until you hear it click into the latch, then press START/PAUSE to restart the cycle. Check the door opening and gasket area for any clothing or debris that might be preventing full closure. If the error persists after the door is confirmed shut, inspect the door latch assembly and door sensor for damage or failure, as one of those components may need to be replaced.

A basic reset will not permanently clear the dC4 code if the root cause has not been addressed. The code will return as soon as the washer checks the door status again. The error will only clear reliably once the inner door is properly closed and latched, or once a faulty door latch or sensor component has been repaired or replaced.