During the cycle---if a leak has been detected by the electrode/leak sensor---the unit will shut-down and trigger an "LE" error (Leak Error).
Not having finished the cycle---the dishes/glasses/silverware will remain dirty.
Inspect the electrodes on the bottom of the dishwasher---part of the plastic bottom cover/plate (must remove d/w from the counter)
Oftentimes---evidence of a leak can be seen/traced to a point of origin---even if the area under the dishwasher is bone-dry when you are examining it.
Look for detergent residue (white stain)
On the other hand---if you find that the bottom plate/cover is wet (and water is still in the electrode "mini-sump")---wipe dry and run a test cycle with the d/w still removed from the counter.
If an "LE" occurs again---remove the bottom cover again and try to trace/locate the origin of the leak.
<<< I had an LG that would lose every drop of water and the customer didn't notice >>>
Seems very unlikely...
Even if the customer complains that the dishes/glassware are still dirty but has not seen/noticed water on the floor---an error *will* occur---indicating a problem/fault.
An LG dishwasher that "loses" water during the fill cycle---will trigger an "E1" error---before attempting to even start the cycle.
During fill--- the Hall Effect Sensor on the Guide Assy---is indicating that water is entering the tub---but the *float* (also part of the Guide Assy) is not rising and actuating a small microswitch.
Within a specific time limit---the Main Board is expecting/waiting for a "signal"---from the switch.
This lack of "confirmation" (signal)---triggers an "E1" error.
If water is "lost" during the wash cycle---an error of "1E" will be displayed.
The dwindling quantity/amount of water will cause the wash motor RPM to accelerate---which is then detected through feedback to the Main Board from the Hall Effect Sensor on the motor.
The dishes will remain dirty.