LG Dishwasher Error LE: Motor Or Wiring Fault
LE on LG dishwashers is a motor fault—inspect the circulation harness, clear impeller obstructions, and switch to low-suds detergent so the pump doesn’t stall.
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The Logic Verdict
Trim That Weed explains that LE is a circulation-motor alarm. The control loses feedback from the pump because either the wiring harness is loose, the impeller is jammed, or foam from regular dish soap starves the motor. He shows how to pull the side panels, inspect the harness, clear debris from the impeller housing, and reset the cycle after switching to the right detergent.
What It Means
LE stands for locked motor error. The board expects to see a specific current draw from the circulation pump; when it detects an open harness, stalled impeller, or foam-filled sump, it shuts the wash down with LE.
Common Causes
- Loose or damaged harness. A vibrating circulation pump can pull the connector loose and interrupt communication with the control.
- Excess suds. Using non-HE detergent or too much powder fills the tub with foam that the pump can’t move, making it look “locked.”
- Blocked impeller. Glass shards or utensils in the sump can stop the impeller from spinning freely.
Step-by-Step Fix
- Power down. Unplug the dishwasher or flip the breaker so you can access wiring safely.
- Inspect the wiring harness. Remove the toe panel/side covers and tug gently on the circulation pump connector. Reseat loose plugs or replace damaged wiring.
- Switch to proper detergent. Use only dishwasher detergent and measure 1–2 tablespoons per full load to prevent suds-related stalls.
- Clear the impeller. Remove the lower rack and filter, then check the drain/circulation impeller for lodged utensils, glass, or food. Remove debris so it spins freely.
- Reassemble and test. Reinstall covers, restore power, and run a rinse cycle. If the motor ramps smoothly, the LE code should stay cleared; otherwise continue diagnosing the pump module.
Parts & Tools
- Finish Quantum dishwasher detergent tabs (pre-measured low-suds soap)
- LG AGM76429503 circulation pump motor (replacement when the original is seized)
Resources
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