Dishwasher displays E7 and will not start; the door appears closed, but the machine thinks it is open.

Safety first: Turn off power at the breaker before adjusting or replacing door components.

• Inspect door closure: Close the door slowly and observe whether it pulls in firmly. If it feels loose or does not click, the latch may be misaligned.
• Check door strike: Examine the metal or plastic strike on the tub frame. If bent or loose, adjust or tighten screws so the latch can engage fully.
• Test door switch: Remove the inner door panel to access the latch and switch assembly. With power disconnected, test the switch for continuity while operating the latch. Replace the latch/switch assembly if it does not change state reliably.
• Inspect for physical damage: Look for cracked plastic on the latch or broken springs. Replace the entire door latch assembly if damaged.
• Reassemble and test: Reinstall the inner panel, restore power, and start a cycle to confirm the error is cleared.