LG · Washer Serious
F02 — Motor circuit fault
F02 indicates a problem in the motor drive circuit — the control board, the inverter section, or the motor harness/connector. Often requires component-level diagnosis.
- Keep using it?
- Limited use only
- DIY difficulty
- Hard
- Verified against
- justanswer.com ↗
How to fix it
- Unplug the washer and trip the breaker — leave for 10 minutes to bleed capacitors.
- Pull the washer out, remove the rear access panel.
- Inspect the harness from the control board to the stator — look for chafing, burn marks, melted insulator.
- Unplug and reseat every connector on both ends.
- Test the stator: ~5-15 Ω between each pair of phase windings (model-dependent); huge difference between any pair = bad stator.
- Look at the main / inverter board for burned components, swollen caps, brown spots.
- Replace the rotor position sensor as the cheapest first part; if no change, the board or stator is bad — call service.
Why it happens
Typical signs: F02 on the display · Drum will not turn at all · Cycle aborts immediately after door lock · Sometimes burning smell from rear of unit
- Loose or chafed motor harness Stator harness rubbed through against the cabinet.
- Failed inverter / motor drive board MOSFETs or IGBTs on the drive board failed shorted or open.
- Shorted stator winding Burned winding pulls excess current and trips the protection circuit.
- Failed rotor position sensor Bad RPS feedback can read as a motor circuit fault.
- Main control board failure Board-level issue when the inverter is integrated.
Parts you may need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
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Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: justanswer.com.