LG Partial Drain / Residual Water

Dishwasher does not drain completely; small pool of dirty water remains in the bottom after cycle.

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Possible Causes

Clogged filter, Partially blocked drain hose, Weak drain pump, Improper drain hose height

How to Fix / Troubleshooting

Safety first: Turn off power before removing filters or hoses.

  • Clean filters: Remove and thoroughly clean the filter assembly and sump area.
  • Check drain hose: Ensure the drain hose has a proper high loop and is not kinked. Disconnect from the sink drain and flush with water to clear partial blockages.
  • Run a drain-only cycle: Use the cancel/drain function to see if water is fully removed. If not, the drain pump may be weak and need replacement.

A very small amount of clean water in the sump is normal, but dirty standing water is not.

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Repair Difficulty

Easy 2/5

Required Part

Drain Pump
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