F9 error code, oven door will not lock or unlock during self-clean, self-clean will not start.

Safety: Turn off power and allow the oven to cool fully before working near the door lock mechanism.

• Check for mechanical jam: Inspect the door latch area for bent metal, debris, or misalignment. Gently move the latch with power off to see if it is stuck.
• Listen for lock motor: With power restored, attempt to start a self-clean. Listen for the lock motor running. No sound may indicate a failed motor or no power to it.
• Access lock assembly: Remove the range top or rear panel (depending on model) to access the door lock motor and linkage. Look for broken plastic arms or disconnected rods.
• Test switches: Use a multimeter to check continuity of the lock switches when the latch is in locked and unlocked positions. Replace the lock assembly if switches are faulty or the motor is inoperative.
• Reset door: After repair, restore power and run a short self-clean or lock test to verify proper locking and unlocking.