LG oven displays "door" and will not start a cooking or self-clean cycle.

Safety first: Ensure the oven is cool before adjusting the door.

• Close door firmly: Open and close the door with moderate force to ensure the latch engages. Listen for a solid click.
• Inspect hinges and latch: Check for sagging door, bent hinges, or damaged latch. Adjust or replace hinges if the door does not align with the frame.
• Test door switch: On models with a separate door switch, access it behind the front frame and test for continuity when the door is closed. Replace if faulty.
• Check gasket: Ensure the door gasket is not preventing full closure. Replace if deformed.