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Error code reference

LG Washer Error Code 9E2

Power supply undervoltage

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What the 9E2 error code actually means

The 9E2 error means your LG washer detected that the electrical power supply dropped too low or cut out briefly, even if just for a split second. This can happen during a small power flicker from the utility company, a loose power cord, or an overloaded outlet. The good news is that the washer is designed to pick up right where it left off once the power stabilizes.

Diagnostic procedure

The full 9E2 procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Automatically released when AC power signal and DC Link voltage return to normal; previous operation continues
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 9E2

Ranked by how often they cause this code
  1. 1Momentary utility power outage or voltage sag
  2. 2Loose or poorly seated power cord
  3. 3Faulty or weak wall outlet
  4. 4Overloaded branch circuit
  5. 5Damaged or degraded power cord

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Questions people ask about 9E2

What does 9E2 mean on a LG washer?
The 9E2 code means the washer detected a power supply undervoltage condition. This occurs when the AC input signal is absent for 60 milliseconds or more, or when the internal DC Link voltage drops below 125V (or below 175V during a power interruption event). The washer responds by activating a protective motor circuit function and waits for power to stabilize before resuming.
How do I fix a 9E2 error on my LG washer?
Start by checking that the power cord is fully and securely plugged into the wall outlet. Verify that the outlet itself is functioning properly and providing stable voltage, ideally by testing it with a multimeter or plugging in another high-draw appliance. If the error occurs repeatedly, consider moving the washer to a dedicated circuit or having an electrician inspect the outlet and household wiring.
How much does it cost to repair a 9E2 error on an LG washer?
If the cause is simply a momentary power flicker or a loose cord, there is no repair cost at all. If a wall outlet needs replacement, an electrician typically charges between $100 and $250 depending on local rates and outlet type. If the washer power cord itself is damaged and needs replacement, parts and labor costs generally range from $75 to $200. Persistent voltage issues caused by household wiring problems may cost more to diagnose and correct.
Will the LG washer reset itself after a 9E2 error?
Yes, the 9E2 fault is designed to clear automatically once the AC power signal and DC Link voltage return to their normal operating levels. The washer will then continue the cycle from where it left off without requiring any manual intervention. If the code keeps returning, there may be an ongoing issue with the power supply or wiring.
Is a 9E2 error on an LG washer a safety concern?
The 9E2 code itself is a protective response, not a hazard indicator. The washer activates motor regenerative current charging to safely manage energy in the motor during the power loss, which is a built-in safety feature. However, if the fault is being caused by a damaged power cord or a faulty outlet, those conditions should be addressed promptly to prevent electrical hazards.

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