LG · Dishwasher
LG Dishwasher dE Error Code
Door not latched for cycle start
What this error means
dE means the door switch did not confirm closure. LG dishwashers won't fill or heat until the latch reports locked.
How DE is detected
When DE appears on a LG dishwasher, the control board has confirmed that water did not leave the machine within the programmed drain window. On LG LDF5545ST, LG LDP6797ST, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most DE calls are resolved without parts: push racks fully in and close the door until one latch click. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If DE returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Rack sticking out and hitting the door
- Utensil handle caught in the gasket
- Warped tub gasket preventing seal
- Failed door latch switch
Step-by-step fixes
- 1Push racks fully in and close the door until one latch click
- 2Inspect the gasket channel for food debris
- 3Press Start again after confirming the door is flush with the frame
- 4Listen for the latch motor buzz without click—sign of failure
When to call a technician
Door latch assembly replacement if dE persists with proper closure.
Affected models
- LG LDF5545ST
- LG LDP6797ST
- LG LDTS5552S
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use dishwashers to prevent DE from lint and food debris buildup.
- Record when DE appears in the cycle and whether it clears after a 60-second power reset on your LG dishwasher—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for DE; LG uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting DE; reversed plugs on pumps and valves cause immediate repeat faults.