nE
LG Dishwasher
Severity: CriticalWhat Does This Error Mean?
The nE error means your LG dishwasher detected a problem with its power supply. The machine is not receiving stable or correct electrical power. This is a critical error — abnormal power can damage the control board and motor. Check your outlet and circuit first before calling for repair.
Affected Models
- LDF5545ST
- LDT5678SS
- LDFN4542S
- LDT7808SS
- Most LG dishwasher models
Common Causes
- Voltage fluctuation or power surge from the home electrical supply
- Dishwasher sharing a circuit with too many other high-draw appliances
- Faulty wall outlet not delivering consistent voltage
- Loose or damaged power cord connection at the dishwasher
- Internal power supply component or control board failing
How to Fix It
-
Cancel the cycle and unplug the dishwasher from the wall.
Disconnect power completely. Do not simply turn off the dishwasher — fully unplug the cord from the outlet.
-
Check your home's circuit breaker for the kitchen circuit.
Look for a tripped breaker in the electrical panel. Reset it if tripped. If it trips again when you run the dishwasher, there's a circuit overload or short circuit.
-
Plug a different appliance into the same outlet to test it.
If the other appliance doesn't work either, the outlet is faulty. Contact an electrician to replace it.
-
Wait 15 minutes, then plug the dishwasher back in and try a short cycle.
A brief wait allows any power surge effects to dissipate. Try a short wash cycle and monitor the display for the nE error.
-
If the nE error returns, the dishwasher needs professional inspection.
The internal power supply board or wiring harness may be damaged. This requires a technician with proper diagnostic tools.
When to Call a Professional
If the outlet and circuit check out fine but the nE error persists, call a technician. Internal power supply components and control boards require professional diagnosis. Do not attempt electrical repairs inside the dishwasher yourself. Expect repair costs of $150–$400 for a control board replacement.
Frequently Asked Questions
Can a power surge cause the nE error?
Yes — this is one of the most common triggers. Lightning, utility switching, or large appliances starting up nearby can spike the voltage. A quality surge protector can help protect your dishwasher from future surges. Make sure to use one rated for the dishwasher's current draw.
Should the dishwasher be on its own circuit?
Ideally yes. Dishwashers draw significant power, especially during the heating cycle. Sharing a circuit with a refrigerator, microwave, or garbage disposal can cause voltage drops. A dedicated 15-amp circuit is recommended for dishwashers.
Is the nE error the same as an E error on other brands?
Not exactly — error codes vary by brand and model. On LG dishwashers, nE specifically relates to a power supply issue. Always check your LG model's manual to confirm what a code means for your specific unit. The LG model number is usually on a sticker inside the door frame.