LG Poor Wash Performance / Low Spray Pressure

Dishes are not getting clean; food particles remain and spray arms seem weak.

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Possible Causes

Clogged spray arms, Dirty filters, Weak circulation pump, Incorrect loading blocking spray

How to Fix / Troubleshooting

Safety first: Turn off power before removing internal parts.

  • Clean filters: Remove the LG filter assembly and wash thoroughly under running water. Clean debris from the sump.
  • Clean spray arms: Remove upper and lower spray arms. Rinse and clear all jets with a toothpick or small brush. Ensure they spin freely when reinstalled.
  • Check loading pattern: Avoid blocking the spray arms with large pans or tall dishes. Do not nest bowls or stack items.
  • Use proper detergent: Use high-quality dishwasher detergent and ensure the rinse aid dispenser is filled.

If performance remains poor, the circulation pump may be weak and require replacement.

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Repair Difficulty

Easy 2/5

Required Part

Spray Arms and Filter Assembly
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