Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to LG dishwashers
- Confidence medium
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The control did not detect normal draining. Food debris and installation problems are common, but a failed drain pump or control circuit is also possible.
Most likely causes
- A kinked, frozen or clogged drain hose
- A blocked sink air gap, garbage-disposal connection or disposal knockout plug left in place
- Dirty dishwasher filters or debris in the sump/check valve
- A damaged drain-pump impeller, failed pump, wiring issue or control fault
Safe checks for the owner
- Turn off power before reaching into the filter or sump area.
- Clean the accessible filters and remove visible debris without forcing the pump impeller.
- Inspect the drain hose and the sink/disposal connection for obstruction.
Estimated U.S. repair cost
$220–$430, depending on model, access, parts availability and local labor.