Oven attempts to lock for self-clean but fails and displays F91

Safety first: Turn off power at the breaker before accessing internal components.

• Check door alignment:
  • Ensure the oven door closes fully and evenly.
  • Adjust hinges if the door is sagging or not sealing properly.
• Inspect latch hook:
  • Look at the latch hook on the oven frame for bending or damage.
  • Straighten minor bends carefully with pliers if needed.
• Access lock assembly:
  • Remove rear or top panel to access the door lock motor and latch.
  • Check for grease buildup, debris, or bent linkage preventing full travel.
• Test lock motor and switches:
  • Manually move the latch and listen/feel for binding.
  • Use a multimeter to test continuity of lock position switches as the latch moves.
  • Check motor resistance; replace if open or shorted.
• Repair or replace:
  • Lubricate pivot points lightly with high-temp lubricant if binding is minor.
  • Replace the door lock motor and latch assembly if mechanical or electrical failure is found.
• Test self-clean: After reassembly, run a short self-clean or lock test to confirm proper locking without F91.