Samsung · Dishwasher
Samsung Dishwasher 4E Error Code
Water supply not reaching the tub
What this error means
4E is a fill timeout—Samsung opened the inlet valve but the flow meter or level switch never confirmed enough water entered within the programmed window. The cycle stops before wash.
How 4E is detected
When 4E appears on a Samsung dishwasher, the control board has confirmed that water did not leave the machine within the programmed drain window. On Samsung DW80R5060US, Samsung DW80B7070US, 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 4E calls are resolved without parts: open the hot supply valve fully and run hot at the sink first. 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 4E 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
- Supply valve under the sink closed or partially open
- Kinked copper or braided inlet line in the cabinet
- Inlet valve screen clogged with pipe scale
- Flood-safe hose tripped and internally shut off flow
Step-by-step fixes
- 1Open the hot supply valve fully and run hot at the sink first
- 2Inspect the inlet hose path for sharp bends behind the kick plate
- 3Power-cycle two minutes after confirming water at the dishwasher connection
- 4Replace flood-safe hoses with standard braided lines if the valve inside tripped
When to call a technician
Strong flow at the inlet fitting with 4E during fill means inlet valve or flow sensor replacement.
Affected models
- Samsung DW80R5060US
- Samsung DW80B7070US
- Samsung DW80R7031US
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use dishwashers to prevent 4E from lint and food debris buildup.
- Record when 4E appears in the cycle and whether it clears after a 60-second power reset on your Samsung dishwasher—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for 4E; Samsung uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting 4E; reversed plugs on pumps and valves cause immediate repeat faults.