Does this guide apply to your appliance?
Match the brand, device type and complete display code. The same code can mean something different on another product family or market; a series name does not confirm every model in that series.
Model and family references in this record:
Likely causes
- The automatic detergent dispenser drawer is partly open or not fully inserted.
- Hardened detergent, detergent buildup, or another obstruction is preventing the drawer from closing.
- The dispenser reservoirs or covers were not reassembled correctly after the drawer was cleaned or removed.
- The drawer-position sensor, latch, or dispenser assembly may require service if the code remains after the drawer is correctly installed.
What to try
Fully close the detergent dispenser drawer
Easy- Stop the washer.
- Push the automatic detergent dispenser drawer fully into the washer until it is properly closed.
- Restart the washer and check whether OPn has cleared.
Check for residue or incorrect dispenser assembly
Moderate- Stop the washer and open the dispenser only when the washer is not operating.
- Inspect the drawer and compartment for hardened detergent, buildup, or another obstruction.
- If the drawer was removed or cleaned, verify that the detergent reservoirs and covers are correctly assembled.
- Slide the drawer slowly and fully back into place; do not force it.
- Restart the washer and check the display.
This step is marked caution. Stop if you are not qualified to continue.
Request service if OPn persists
ProfessionalThis is a service referral, not a do-it-yourself repair procedure.
- Confirm that the drawer is fully inserted and that no visible obstruction remains.
- Do not continue removing or forcing the drawer while the washer is operating.
- Contact LG or a qualified appliance technician for model-specific diagnosis.
- Tell the technician that OPn remains despite the drawer being correctly closed; the drawer sensor, latch, or dispenser assembly may need inspection.
This step is marked professional. Stop if you are not qualified to continue.