LG Dishwasher E1 Error: Base Flood Sensor
LG dishwasher error — here’s what you need to know. The E1 error code on your LG dishwasher indicates the base flood sensor has been activated — significant water has accumulated in the base pan. This is a High severity issue. What Does E1 Mean on an LG Dishwasher? E1 is the base-level flood protection […]
~50%
DIY Fixable
From $115
Typical Repair Cost
1 – 3 hrs
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. E1 indicates water is already reaching structural areas of your home. Continued use risks serious and expensive water damage to flooring, subflooring, and cabinetry. Do not use the dishwasher until the leak is found and fixed.
Can I reset the code?
Yes. Once the base pan is dried out the E1 code can be cleared by a reset, but it will return immediately when the next cycle allows water to re-enter the base. The physical leak source must be repaired.
When to stop immediately?
Stop if you notice: You can see water actively dripping from the base during a cycle., Flooring under or in front of the dishwasher has begun to warp or discolor..
Symptoms You May Notice
Wet or Warped Flooring Under the Dishwasher
Water seeping from beneath the kick plate onto the kitchen floor, or discoloration and warping of hardwood or vinyl flooring in front of the unit.
E1 Code on Display
The control panel shows E1 and all cycle activity stops immediately while the drain pump activates.
Drain Pump Runs Continuously Without a Cycle Active
The dishwasher's drain pump runs on its own repeatedly even when no wash cycle has been started, attempting to evacuate water from the base pan.
Inconsistent temperature performance
The dishwasher runs too hot, too cold, or cycles erratically because the control board receives inaccurate temperature readings from the faulty sensor.
Possible Causes
Cracked or Deteriorated Door Gasket
The door perimeter seal has hardened, cracked, or pulled away, allowing water to spray out around the door during wash cycles and drip into the base pan.
DIY PossibleInternal Hose Clamp Failure
A hose clamp on the circulation pump outlet, drain hose, or spray arm supply hose inside the dishwasher has loosened or corroded, causing a drip directly into the base.
Requires ProfessionalPump Housing or Sump O-Ring Failure
The rubber O-ring or gasket sealing the pump housing to the tub sump has hardened and cracked with age, creating a slow leak that pools in the base pan over multiple cycles.
Requires ProfessionalSafe Checks You Can Do
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1
Remove the Kick Plate and Inspect the Base Pan
With the dishwasher off and unplugged, remove the lower kick plate (usually two screws). Shine a flashlight into the base. If you see standing water, use a towel or sponge to absorb it. Allow the base to dry completely before attempting a reset.
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2
Inspect the Door Gasket from Inside and Outside
Run your hand around the full door seal looking for cracks, tears, or gaps. Pay particular attention to the bottom corners where the gasket is most prone to wear. If the seal is compromised, order a replacement by model number — it clips or slides into a channel.
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3
Run a Short Cycle and Monitor with Kick Plate Removed
With the base pan dry and the kick plate off, run a Short or Quick cycle and watch with a flashlight for where water first appears. This helps identify whether the leak is from the door, a hose at the back, or the pump area below the tub.
When to Call a Professional
Contact a qualified technician if:
- Leak source cannot be identified through visual inspection of door seal and accessible hoses.
- Water appears from the pump housing area, requiring pump removal to access the seal.
- Tub or sump casting shows corrosion or a physical crack as the source.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Dishwasher Repair Service Schedule Appointment