LG error code SE
LG error code SE indicates a motor fault or PCB fault. LG’s own technical guidance says to “try the motor first” – which means testing the motor and its connections before suspecting the PCB. Do not buy a new motor or PCB speculatively. Test the motor windings and connections with a multimeter, and check the carbon brushes if fitted, before concluding either component has failed.
What LG Error Code SE Means
SE indicates a motor fault. LG’s technical documentation describes the possible causes as a motor fault or a main PCB fault, and recommends checking the motor first. Like many motor-related error codes, SE tells you which system has reported a problem but not which specific component within that system has failed.
SE is consistent with similar motor error codes across other brands – the error identifies that the motor circuit is not functioning as expected but cannot distinguish between a failed motor, a failed PCB, a wiring fault, or worn carbon brushes. Each of these requires a different repair. For more on how motor error codes work in general, see our guide on appliance error codes – friend or foe?
What to Check Before Spending on Parts
LG’s instruction to “try the motor first” means test the motor – not buy a new one. Washing machine motors and PCBs are expensive components. Replacing either without confirming the fault will be found in that component is very likely to be a costly mistake. Test before ordering.
Check all motor wiring connections
Inspect the connector plug on the motor for loose, corroded, or burned terminals. Disconnect and reconnect the plug to ensure a clean contact. Trace the motor wiring harness back to the PCB and check that connector too. A poor connection can produce SE without any component having actually failed.
Check the carbon brushes (if fitted)
Not all LG washing machine motors use carbon brushes – many use brushless direct drive motors. If the motor does have brushes, worn brushes are a common and relatively inexpensive cause of motor errors. See our guide on diagnosing worn carbon brushes to check whether this applies to your motor.
Test the motor windings with a multimeter
With the machine unplugged and the motor connector disconnected, test across the motor terminals for continuity and expected resistance. An open circuit reading indicates a failed winding. See our full guide on washing machine motor not running for motor testing guidance.
If connections, brushes, and motor windings all check out correctly, the PCB is the remaining suspect. PCB faults require either replacement or specialist electronic testing and repair – this is beyond typical DIY scope and an engineer is recommended.
Need an Engineer?
Motor and PCB diagnosis requires test equipment and experience with motor circuits.
Related Guides
Washing Machine Drum Not TurningFull diagnostic guide for motor, belt, and PCB faults that stop the drum rotating.
Diagnosing Worn Carbon BrushesHow to confirm whether worn brushes are causing a motor fault before replacing them.
Appliance Error Codes: Friend or Foe?Why error codes identify systems rather than specific failed components – and how to use them as a starting point.
LG Error Code CLThe LG child lock indicator – not a fault, just an accidentally activated lock.
Frequently Asked Questions
What does error code SE mean on an LG washing machine?
SE means the machine has detected a motor fault. LG’s technical guidance suggests the cause could be the motor itself or the main PCB, and recommends checking the motor first. The error does not specify which component has failed – diagnosis requires testing connections, carbon brushes (if fitted), and motor windings before considering whether the PCB is at fault.
Should I replace the motor for LG error SE?
Not without testing it first. Motors are expensive and SE can be caused by a wiring connection fault or worn carbon brushes rather than a failed motor. Test the motor connections, check the brushes if the motor has them, and test the motor windings with a multimeter before ordering any replacement parts.
Could SE be a PCB fault rather than a motor fault?
Yes – LG’s technical documentation lists the PCB as a possible cause alongside the motor. However, the guidance is to check the motor first because motor faults are more common and because a PCB fault is only confirmed once the motor and its connections have been eliminated. Do not replace the PCB speculatively.
2 Comments
Grouped into 2 comment threads.
0 replies If you've managed to sort it Kenneth please let us know. Unfortunately there's no information available at all about the pcbs as manufacturers don't want us repairing them. If it's definitely not the motor the suspicion falls on the pcb or connections but if you don;t have another one to try it's a gamble buying one. You could always try getting it tested at QER repairs.
0 replies I'm a technician, and the machine I'm presently working on now is showing SE, I have check it is not the motor, bit from the PCB. pls what can be the reason for this fault from the PCB? what can I check for on the board. I really need your help.
I’m a technician, and the machine I’m presently working on now is showing SE, I have check it is not the motor, bit from the PCB. pls what can be the reason for this fault from the PCB? what can I check for on the board. I really need your help.
If you’ve managed to sort it Kenneth please let us know. Unfortunately there’s no information available at all about the pcbs as manufacturers don’t want us repairing them. If it’s definitely not the motor the suspicion falls on the pcb or connections but if you don;t have another one to try it’s a gamble buying one. You could always try getting it tested at QER repairs.