Samsung · Dishwasher

E4

Overflow or Leak Detected

Severity

High

Seeing E4 on your Samsung Dishwasher display means the appliance self-diagnostic detected "Overflow or Leak Detected". Before calling a technician, work through the steps in this guide — the fix is often simpler than you think.

Owner's Summary

Samsung dishwashers have a flood sensor in the base. Once water collects there, E4 triggers and the machine stops to prevent floor damage. Tilting the machine back may drain the pan and clear the code, but you must find and fix the actual leak source.

Symptoms

Samsung dishwasher stopping mid-cycle, E4 error, water possibly under machine

Common Causes

Leak activating the base flood sensor
Damaged door gasket
Cracked spray arm causing excess water dispersion
Loose inlet hose connection under sink

How to Fix

1 Tilt machine back slightly to drain base pan — this alone may clear E4
2 Inspect door gasket for tears or debris preventing proper seal
3 Check all hose connections under sink for active drips
4 Run a short cycle while watching underneath for leaks
5 Replace door gasket if leak source confirmed

Tools You'll Need

Pliers Towels / Bucket Flashlight Replacement Gasket

Most of these fixes need only basic hand tools. If your repair requires opening electrical housings or testing live components, a multimeter and basic electrical safety knowledge are essential — when in doubt, call a technician.

Technical Explanation

A float switch in the base pan closes when water accumulates, sending a direct signal to the PCB which immediately kills all water inlet solenoids and pump relay outputs. E4 persists until the float switch opens again as the pan dries.

Is It Safe to Keep Using?

Urgent — an active leak can damage flooring and cabinetry. Identify the leak before running the machine again.

Technician's Pro Tip

Using too much detergent or non-dishwasher detergent creates suds that overflow the sump and trigger E4 without a mechanical leak. Try a cycle with no detergent to rule this out first — it is a surprisingly common cause.

Related Codes

E2 — Samsung Washing Machine

Water Supply Error

High

4E — Samsung Washing Machine

No Water Supply Detected

High

5E — Samsung Washing Machine

Drain Error — Water Not Draining

High

Frequently Asked Questions

What does error code E4 mean on a Samsung Dishwasher?

Code E4 on a Samsung Dishwasher indicates "Overflow or Leak Detected." In practice, the most common trigger is leak activating the base flood sensor. Severity is rated high, and typical repair costs range from $10 to $250.

Can I fix E4 myself, or do I need a technician?

Many cases of E4 can be resolved without a technician. The first step to try: tilt machine back slightly to drain base pan — this alone may clear E4. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.

Is it safe to keep using my dishwasher with code E4 showing?

Urgent — an active leak can damage flooring and cabinetry. Identify the leak before running the machine again.

How much does it cost to repair E4 on a Samsung Dishwasher?

Repair costs for code E4 typically range from $10 to $250. Door gasket: $15–$60; Hose fitting: $10–$30; Pump seal: $30–$120. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.

Estimated Repair Cost USD

$10 – $250

Door gasket: $15–$60; Hose fitting: $10–$30; Pump seal: $30–$120