F9 error; oven door will not lock or unlock during self-clean

Safety first: Turn off power at the breaker. The door lock mechanism can move unexpectedly; keep fingers clear of moving parts.

• Check door alignment: Ensure the oven door closes fully and evenly. Look for bent hinges or obstructions around the latch.
• Manual release (if locked): On many Monogram models, you can remove the top panel and manually move the door lock lever to release the door. Consult the tech sheet behind the control panel for the exact location.
• Inspect lock assembly: Access the door lock motor and switch assembly from the top or rear. Check for broken plastic parts, seized linkage, or burned motor.
• Test lock motor and switches: Use a multimeter to check continuity of the lock motor and the lock/unlock position switches. Replace the assembly if the motor is open or switches do not change state when the latch is moved.
• Check wiring to control board: Verify continuity from the lock assembly to the control board. Repair any damaged wires.