Dishwasher displays iD0 and will not start a wash cycle.

Safety first: Disconnect power before adjusting the door mechanism.

• Check door closure: Ensure the door closes firmly and latches with a solid click. Remove any items or racks preventing full closure.
• Inspect latch and strike: Examine the metal or plastic door strike on the cabinet and the latch assembly on the door for damage or misalignment. Adjust screws if the strike is not centered.
• Test switch (basic): With power off, gently press the latch mechanism and listen for a distinct click from the microswitch.

If the door appears aligned but iD0 remains, the door lock assembly or door switch is likely faulty and should be replaced. This is a moderate repair requiring door panel removal.