LG Washer SE Error: Motor hall sensor failure
LG washer error — here’s what you need to know. The SE error code on your LG washing machine indicates Motor Hall Sensor Error – Motor Position Sensor Failure. This is a High severity issue. What Does SE Mean on an LG Washer? The SE code means the control board is not receiving valid position […]
~40%
DIY Fixable
From 20
Typical Repair Cost
1 – 2 hours
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. A confirmed SE error means the motor cannot be controlled safely. Running the washer without valid hall sensor feedback risks uncontrolled motor behavior and potential damage to the inverter drive board.
Can I reset the code?
Yes. A power reset may temporarily clear an intermittent SE. However, if the error recurs, repair is required — repeated resets on a failing sensor will not prevent eventual permanent failure.
When to stop immediately?
Stop if you notice: SE appears every time the drum attempts to spin, even after a full power reset., The motor makes a loud buzzing or grinding noise when it tries to start before shutting down..
Symptoms You May Notice
Washer drum hums or vibrates briefly then stops without spinning
The motor receives power and attempts to start, produces a brief hum or vibration, then immediately stops because the control board receives no valid position signal from the hall sensor to continue commutation.
Drum spins erratically or at incorrect speeds
A partially failing sensor may allow the drum to spin but without proper speed feedback, causing it to run at the wrong speed or lurch suddenly before the fault code locks the cycle.
SE code on display and cycle will not complete
The error appears consistently when the motor is commanded to run, as the inverter drive cannot operate the motor without valid hall sensor feedback.
Error appears intermittently then becomes permanent
Hall sensor failure often begins as an occasional SE that disappears after a reset, then progresses to a permanent fault as the sensor's internal electronics fully degrade.
Possible Causes
Failed hall effect sensor on stator
The hall sensor's semiconductor element degrades from heat and vibration over time, eventually producing no signal or an erratic signal that the control board cannot interpret.
Requires ProfessionalLoose or damaged hall sensor wiring harness
The multi-pin connector between the stator hall sensor and the control board can loosen from vibration or suffer wire breakage, interrupting the sensor signal.
Requires ProfessionalDamaged rotor or demagnetized rotor magnets
The permanent magnets embedded in the direct-drive rotor provide the magnetic field the hall sensor reads; a chipped or partially demagnetized magnet produces an unreadable signal.
Requires ProfessionalSafe Checks You Can Do
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1
Perform a power reset
Unplug the washer for 5 minutes, then reconnect and attempt a cycle. An intermittent SE caused by a signal glitch may clear temporarily after a full power reset.
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2
Check the hall sensor connector at the back of the machine
With the washer unplugged, pull the machine away from the wall and locate the wiring harness running along the back of the motor. Gently press the multi-pin connectors to ensure they are fully seated — a loose connector is sometimes the sole cause of SE.
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3
Run the washer diagnostic mode
Enter LG's service diagnostic mode (press and hold Spin Speed + Soil Level simultaneously for 3 seconds on most models) to view the specific sub-code, which can distinguish between a sensor fault and a rotor fault.
When to Call a Professional
Contact a qualified technician if:
- Voltage test at the hall sensor connector shows no signal pulses on the output wire when the motor is manually rotated, confirming sensor failure.
- Visual inspection of the rotor reveals chipped, cracked, or missing magnet material.
- A replacement hall sensor is installed but SE persists, indicating a damaged motor control board.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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