Lg Dishwasher He Error Code: Easy Fixes And Causes

The LG Dishwasher HE error usually means a heating problem, often tied to the heater, wiring, or control system.

If you are seeing the Lg Dishwasher He Error Code, you are not alone. I’ve seen this code come up when a dishwasher cannot heat water the way it should, and that can stop a full wash cycle fast. In this guide, I’ll walk you through what the Lg Dishwasher He Error Code means, why it happens, how to troubleshoot it, and when it makes sense to call for repair.

What the Lg Dishwasher He Error Code Means

The Lg Dishwasher He Error Code points to a heater issue. In plain English, the dishwasher is telling you that it is having trouble warming the water during the wash cycle.

Heat matters because hot water helps break down grease, remove food bits, and improve drying. When the heater does not work right, you may notice dishes coming out cloudy, oily, or still wet.

The code can show up for a few reasons:

• A failed heating element
• A loose or damaged wire
• A bad temperature sensor
• A control board problem
• Water flow issues that keep the heater from working as expected

I always tell people to think of the heater like the stove under a soup pot. If the flame is weak, broken, or not getting power, the soup never cooks right. The same idea applies to the Lg Dishwasher He Error Code.

Common Causes of the Lg Dishwasher He Error Code

There are several possible causes, and some are simpler than others. In my experience, it is often not just one part failing. It can be a chain reaction, where a small issue leads the machine to think the heater is bad.

Heating element failure

The heating element is one of the first things to check. If it burns out or gets damaged, the dishwasher may stop heating water and trigger the Lg Dishwasher He Error Code.

Signs can include:

• Dishes not drying well
• Water staying cool
• No steam during or after the cycle
• The error returning every time you run a wash

Wiring or connection problems

Loose or corroded wiring can interrupt power to the heater. I have seen cases where the part itself was fine, but a connector had backed off just enough to cause the code.

Look for:

• Burn marks
• Melted connectors
• Loose plugs
• Corrosion near the heater or control area

Faulty thermistor or temperature sensor

The dishwasher uses a sensor to check water temperature. If that sensor sends the wrong reading, the machine may think the heater is not working and show the Lg Dishwasher He Error Code.

This is common when:

• The sensor is out of range
• The sensor wiring is damaged
• The control board gets false temperature data

Control board issues

Sometimes the problem is not the heater at all. The control board may fail to send proper power or may misread the sensor signal.

This is less common than a bad heater, but it does happen. When it does, the fix can be more technical and may need a trained repair tech.

Water supply or circulation problems

A dishwasher needs good water flow to heat properly. If the tub is not filling correctly or the pump is not moving water well, the heater may not operate as expected.

Possible causes include:

• Clogged filters
• Weak water pressure
• A blocked spray arm
• A circulation pump issue

Symptoms You May Notice Before or With the Error

The Lg Dishwasher He Error Code usually does not appear out of nowhere. Many people notice warning signs first.

Common symptoms include:

• Dishes are still dirty after a full cycle
• Glassware looks cloudy
• Plastic items stay wet
• The dishwasher takes longer than usual
• The water does not feel hot after washing
• The machine stops mid-cycle and displays the error

If you notice more than one of these signs, it is worth taking the issue seriously. Small heating problems often grow into bigger ones if ignored.

How to Troubleshoot the Lg Dishwasher He Error Code

Before you jump to a repair, start with simple checks. I like to move from easiest to hardest. It saves time and keeps you from replacing a part that was never the real problem.

1. Reset the dishwasher

Start with a basic reset.

• Turn the dishwasher off
• Unplug it, or switch off the breaker
• Wait about 5 minutes
• Restore power and run a short cycle

Sometimes the error is temporary and clears after a reset. If the code comes back, move to the next step.

2. Check the water supply

Make sure the dishwasher is getting enough water.

• Open the water valve fully
• Check the inlet hose for kinks
• Confirm water pressure is normal
• Inspect the inlet screen for buildup

Poor water supply can confuse the system and affect heating performance.

3. Clean the filter and spray arms

A blocked filter can hurt circulation. That can make heating less effective.

• Remove food debris from the filter
• Rinse the spray arms
• Clear holes clogged with mineral buildup
• Make sure nothing blocks the arm movement

Good water flow helps the heater do its job.

4. Inspect visible wiring

If you are comfortable doing basic checks, look for obvious damage.

• Unplug the unit first
• Check for loose connectors
• Look for burned spots
• Check for signs of moisture near electrical parts

Do not touch exposed wiring if you are unsure. Safety matters more than speed.

5. Test the heating element

If you have a multimeter and know how to use it, test the heater for continuity. A failed heating element often shows no continuity or readings outside the normal range.

If you are not used to electrical testing, this is a good point to call a pro. Guessing with electrical parts can waste money and cause more trouble.

6. Check the thermistor or sensor

A faulty sensor can mimic a heater failure. A technician can test the resistance and compare it to the expected range for your model.

That is why the Lg Dishwasher He Error Code can sometimes be tricky. The dishwasher may be reacting to a bad reading, not a bad heater.

7. Review the control board

If all other parts test fine, the control board may be the source. This is usually a last-step diagnosis because boards are expensive and should not be replaced too quickly.

A careful tech will confirm the heater, sensor, and wiring first before blaming the board.

When You Can Fix It Yourself

Some parts of the troubleshooting process are safe for most homeowners. These are the steps I would feel comfortable recommending first.

You can usually handle:

• Resetting the dishwasher
• Checking the water supply
• Cleaning the filter
• Inspecting spray arms
• Looking for visible loose connections
• Reading the model manual for error code details

These steps are low risk and often solve small issues. If the Lg Dishwasher He Error Code keeps returning after that, it is time to go deeper.

When to Call a Repair Technician

Some problems need tools, test meters, and real repair experience. If you get to that point, calling a technician can save time and avoid damage.

Call for service if:

• The heater tests bad
• The wiring is burned or damaged
• The error returns after a reset
• The dishwasher trips the breaker
• You smell burning plastic
• Water leaks near electrical parts

From experience, it is better to stop early than to turn a simple repair into a bigger one. A dishwasher is not the place to gamble with live electrical parts.

Repair Costs and What to Expect

Repair cost depends on the part and labor. A simple fix can be affordable, while a control board replacement can cost much more.

Typical repair factors include:

• Heating element price
• Sensor or thermistor cost
• Labor rates in your area
• Service call fees
• Whether the dishwasher is under warranty

In many cases, the heating element or sensor is cheaper than replacing the full appliance. Still, if your dishwasher is older and has multiple issues, replacement may be the smarter choice.

How to Prevent the Lg Dishwasher He Error Code

A little maintenance goes a long way. I’ve seen dishwashers last far longer when owners keep them clean and don’t overload them.

Helpful habits include:

• Clean the filter once a month
• Remove heavy food scraps before loading
• Use the right detergent
• Run hot water at the sink before starting a cycle
• Check spray arms for clogs
• Keep the door seal and tub clean
• Descale the unit if you live in a hard-water area

Hard water is a big one. Mineral buildup can quietly coat parts and reduce heating performance over time. Think of it like plaque on teeth. It builds slowly, then suddenly causes trouble.

Real-World Lessons From Troubleshooting This Error

One thing I’ve learned is that people often blame the heater too fast. In practice, the Lg Dishwasher He Error Code can come from a sensor or wiring issue that looks just like a failed heater.

I once saw a dishwasher with this code where the heating part was fine, but a loose connector behind the lower panel was the real problem. A small vibration had made the connection weak enough to interrupt heating.

The lesson is simple:

• Start with the basics
• Do not skip the easy checks
• Test before replacing parts
• Watch for signs of water damage or corrosion

That approach saves both time and money.

Frequently Asked Questions of Lg Dishwasher He Error Code

What does the LG dishwasher HE error code mean?

The LG dishwasher HE error code usually means there is a heating problem. It may point to a failed heater, a sensor issue, or a wiring fault.

Can I keep using my dishwasher with the HE error code?

You can try, but the dishwasher may not clean or dry well. If the code keeps coming back, stop using it until the problem is checked to avoid more damage.

Is the heating element always the cause?

No, not always. The issue can also come from the thermistor, wiring, control board, or poor water circulation.

How do I reset the HE error code?

Turn off power to the dishwasher for about 5 minutes, then restore power and run a cycle. If the code returns, the underlying problem likely still exists.

Should I replace the dishwasher if I see the HE error code?

Not right away. Many cases are repairable, especially if the issue is a sensor or wiring problem rather than a major control board failure.

Is the HE code dangerous?

It is not usually an immediate danger, but electrical and heating faults should be handled carefully. If you smell burning, see smoke, or notice tripped breakers, stop using the dishwasher and get help.

Conclusion

The Lg Dishwasher He Error Code is usually a sign that the dishwasher cannot heat water properly, and that can affect cleaning, drying, and overall performance. The good news is that the cause is often something you can narrow down with simple checks like resetting the unit, cleaning the filter, and inspecting the water supply.

If the error keeps coming back, the next step is to test the heater, sensor, and wiring with care. Take your time, work safely, and do not rush into part replacement before you know the real cause. If you found this guide useful, explore more appliance troubleshooting tips or leave a comment with your model and symptoms.