Panasonic Internal Leak / Hose or Sump Seal Failure

Dishwasher leaks water onto the floor from underneath

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Cracked drain hose, Loose hose clamp, Failed sump gasket, Leaking circulation pump seal

How to Fix / Troubleshooting

Safety first: Disconnect power and water. Be prepared for water spillage when tilting the unit.

  • Pull out and inspect: Slide the dishwasher out and remove the base panel. Look for water trails and active drips during a test fill.
  • Tighten clamps: Check all hose clamps on the sump, circulation pump, and drain hose. Tighten if loose.
  • Replace damaged hoses: If any Panasonic hoses are cracked or swollen, replace them with OEM parts.
  • Check sump and pump seals: If water appears around the sump or pump shaft, replace the sump gasket or pump seal assembly.
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Repair Difficulty

Hard 4/5

Required Part

Sump Gasket / Internal Hoses
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