LG Oven/Range Error Code F19 — Door Lock Motor Circuit Reversed
What this means
The F19 error code on LG ovens indicates the door lock motor is receiving power with reversed polarity, causing it to drive in the wrong direction. This typically happens after a repair where the motor harness was reconnected incorrectly, or when a replacement lock assembly has a different pin configuration. The door may fail to lock for self-clean or may lock when it should unlock.
Step-by-step fix
4 stepsPower cycle the oven
Turn off the breaker for two minutes. Restore power. If no recent repair work was done, a board glitch may have caused a false F19. Test with a self-clean cycle.
If the code appeared right after a door lock or control board replacement, the fix is almost certainly a wiring correction.
Check the lock motor connector
Turn off the breaker. Remove the top rear panel to access the door lock motor assembly. Check that the wiring harness connector is plugged in correctly — the connector should only fit one way, but some generic replacement parts have symmetrical connectors that can be reversed.
Compare the wire colors at the connector to the wiring diagram on the oven's tech sheet (usually taped inside the drawer panel or behind the rear cover).
Verify the correct replacement part
If you recently replaced the door lock assembly, confirm the part number matches your model. An incorrect assembly for a different LG model may have reversed pin assignments, even if the connector physically fits.
LG uses different lock assemblies across model years — always order by your specific model number, not just brand and appliance type.
Swap the motor leads if needed
If the connector is symmetrical and was plugged in backward, unplug it, rotate it 180 degrees, and replug it. Restore power and test. If the connector is keyed (only fits one way) but the motor still runs backward, the assembly itself may be defective — replace it.
After correcting the wiring, run a self-clean cycle to verify the lock engages and disengages in the correct sequence.
When to call a professional
If the motor connector is correct and the right part is installed but F19 persists, the control board may be sending a reversed signal. A technician should check the board output.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Door Lock Motor Assembly
Part #EBG61305803 · $40–$80
If the current assembly is the wrong part or defective
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