LG · Dishwasher
LG Dishwasher 6E Error Code
Inlet water flow too low during fill
What this error means
6E is LG's inlet flow error—the fill valve opened but the flow meter or level switch did not see enough water within the programmed window. The cycle aborts before wash to avoid running the pump dry.
How 6E is detected
When 6E 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 6E calls are resolved without parts: run hot water at the kitchen sink for thirty seconds, then open the dishwasher supply valve fully. 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 6E 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
- Hot supply valve under the sink closed or only partially open
- Inlet hose kinked where it passes through the cabinet side panel
- Mesh strainer at the dishwasher inlet clogged with pipe scale
- Failed inlet valve solenoid passing only a trickle on one side
Step-by-step fixes
- 1Run hot water at the kitchen sink for thirty seconds, then open the dishwasher supply valve fully
- 2Inspect the copper or braided inlet line for sharp bends behind the kick plate
- 3Disconnect the inlet hose at the dishwasher, rinse the internal screen into a bucket, and reconnect
- 4Power-cycle two minutes and start a Normal cycle—listen for steady fill hiss in the first minute
When to call a technician
Strong flow at the disconnected inlet with 6E during fill points to inlet valve or flow sensor replacement under the tub.
Affected models
- LG LDF5545ST
- LG LDP6797ST
- LG LDTS5552S
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use dishwashers to prevent 6E from lint and food debris buildup.
- Record when 6E 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 6E; LG uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting 6E; reversed plugs on pumps and valves cause immediate repeat faults.