Samsung · Dishwasher

E2

Water Temperature Too High

Severity

Medium

The error code E2 on your Samsung Dishwasher indicates a specific system failure categorized as "Water Temperature Too High". This guide walks you through the most likely causes and the correct repair sequence.

Owner's Summary

Your dishwasher detected water that is too hot. While this sounds backwards, water over 140°F can damage plastic components and the machine will stop to protect itself. First check your home water heater setting.

Symptoms

Samsung dishwasher stopping mid-cycle, E2 fault code, steam visible

Common Causes

Household water heater set above 140°F
Faulty thermistor reading incorrectly
Heating element relay stuck closed on PCB
Defective temperature sensor

How to Fix

1 Check home water heater thermostat — recommended 120°F for dishwashers
2 Test NTC thermistor resistance and compare to spec chart
3 Inspect heating element relay on PCB for burn marks
4 Replace thermistor or PCB if tests confirm failure

Tools You'll Need

Multimeter Towels / Bucket Flashlight

These are simple, low-risk fixes most homeowners can do with tools already in a basic toolbox.

Technical Explanation

The PCB reads NTC thermistor resistance continuously. If temperature exceeds the upper safety limit of approximately 167°F, the module posts E2, cuts the main pump relay and enters a cool-down wait state.

Is It Safe to Keep Using?

Do not continue running cycles until the temperature source is identified. Overheated water damages the door gasket and plastic spray arms over time.

Technician's Pro Tip

If all components test within spec, the thermistor is likely providing intermittent false high readings — more common than actual overheating. Replace the thermistor first as it is the cheapest fix.

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 E2 mean on a Samsung Dishwasher?

Code E2 on a Samsung Dishwasher indicates "Water Temperature Too High." In practice, the most common trigger is household water heater set above 140°F. Severity is rated medium, and typical repair costs range from $20 to $280.

Can I fix E2 myself, or do I need a technician?

Many cases of E2 can be resolved without a technician. The first step to try: check home water heater thermostat — recommended 120°F for dishwashers. 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 E2 showing?

Do not continue running cycles until the temperature source is identified. Overheated water damages the door gasket and plastic spray arms over time.

How much does it cost to repair E2 on a Samsung Dishwasher?

Repair costs for code E2 typically range from $20 to $280. Thermistor: $20–$50; Heating element: $40–$100; PCB: $120–$280. 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

$20 – $280

Thermistor: $20–$50; Heating element: $40–$100; PCB: $120–$280