LG Washer Error Code SF3

SF3 is a system check error that indicates the washing motor may be defective. The code specifically points to a potential fault in the motor rotor or stator, which are the core components of the direct drive motor. In some cases, the PBA control circuit can also trigger this code if it is malfunctioning. The washer runs a self-diagnostic check and logs SF3 when it detects abnormal motor operation.

You should not continue running the washer while SF3 is active. A defective motor or control board can cause unpredictable operation, and running the machine may worsen the damage or create additional faults. Stop using the appliance and have it diagnosed before running another cycle.

A reset may temporarily clear the code from the display, but SF3 will return if the underlying hardware issue has not been resolved. If the rotor, stator, or PBA is genuinely defective, the fault will reappear once the washer attempts to run the motor again. A reset is only a useful step to confirm whether the fault is intermittent or persistent, not a repair solution.

Some basic checks, such as inspecting wiring connectors at the motor for looseness or corrosion, can be performed by a knowledgeable DIYer. However, testing the rotor and stator components and diagnosing the PBA control circuit requires disassembly of the machine and use of a multimeter to check resistance values. If the rotor, stator, or PBA need replacement, most homeowners will want to hire an appliance technician for this repair.

Repair costs depend on which component has failed. A stator or rotor replacement typically falls in the range of $150 to $350 including parts and labor. A PBA replacement can range from $200 to $450 or more depending on parts availability and labor rates in your area. Getting a diagnostic quote from a certified technician before authorizing repairs is recommended.