F93 displayed, often during or after self-clean; door lock operation is erratic.

Safety first: Disconnect power before servicing.

Steps to check:

• Lubricate linkage: With access to the lock assembly, clean and lightly lubricate metal pivot points with high-temperature-safe lubricant (avoid plastic parts).
• Check for binding: Manually move the lock arm through full travel; it should move smoothly without sticking.
• Test motor speed: If qualified, you can power the motor briefly with the correct voltage and observe its movement. A sluggish motor should be replaced.
• Replace lock assembly or EOC: If mechanical parts are free but the error persists, replace the lock assembly. If still unresolved, the EOC may be mis-timing the lock and should be replaced.