Display shows 'd-o' or 'door open' and oven will not start a bake or broil cycle.

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

• Check door closure:
  • Verify the door closes fully and evenly. Adjust hinges or replace if door is sagging.
• Inspect door switch:
  • Locate the door switch (often in the front frame) and press it manually; you should hear a distinct click.
  • Test continuity with a multimeter; it should change state when pressed.
  • Replace the oven door switch if it fails continuity tests.
• Check latch strike:
  • Ensure the latch strike on the door properly engages the switch or latch mechanism.