LG Control Lock / Door Latch / Input Error

Dishwasher has power but will not start a cycle; start button unresponsive or beeps only.

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Possible Causes

Child lock enabled, Door not fully latched, Faulty touchpad, Control board input failure

How to Fix / Troubleshooting

Safety first: Ensure hands are dry when using the control panel.

  • Disable child lock: Look for a lock icon on the display. Press and hold the corresponding Child Lock button for 3–5 seconds to unlock.
  • Confirm door closure: Close the door firmly until you hear a click. Check that racks are fully pushed in and nothing is blocking the door.
  • Reset control: Turn off the breaker for 1 minute, then restore power and try again.
  • Test buttons: If some buttons work and others do not, the control panel / touchpad may be failing and require replacement.
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Repair Difficulty

Easy 2/5

Required Part

Control Panel / Touchpad Assembly
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