How to Fix LG Dishwasher IE Water Inlet Failure

Quick Diagnosis

An IE error code on an LG dishwasher indicates a water inlet failure. This occurs when the machine fails to fill with water to the correct level within a set time limit, typically due to closed water valves or clogged inlet filters.

Technical diagnostic blueprint diagram for the LG Dishwasher showing symptoms of IE Water Inlet Failure.

Step-by-Step Resolution

  1. 1

    Verify that the main water supply valve under the kitchen sink is turned fully counterclockwise to the open position.

  2. 2

    Unplug the dishwasher's power cord or shut off its circuit breaker.

  3. 3

    Turn off the under-sink water valve supplying the dishwasher.

  4. 4

    Unscrew the physical water inlet hose from the brass water inlet valve at the bottom-left front base of the dishwasher.

  5. 5

    Inspect the small mesh filter screen inside the dishwasher's inlet valve port; use needle-nose pliers to pull it out gently.

  6. 6

    Clean any rust, sediment, or scale off the mesh screen under running water, then reinsert it.

  7. 7

    Inspect the supply hose for bends or kinks; replace it if it is crushed.

  8. 8

    Screw the water supply hose back onto the inlet valve tightly, turn on the water valve under the sink, check for leaks, restore power, and run a cycle.

Alternative Causes & Edge Cases

  • On LG QuadWash dishwashers, an IE code will trigger if the physical float switch assembly inside the bottom basin gets stuck in the up position by grease, requiring a warm water vinegar flush.
  • On older LG models, a faulty household pressure regulator valve that delivers water pressure below 20 PSI can cause slow fill timeouts, triggering the IE error.