Lg Dishwasher Error E1

⚡ Quick Answer: The LG Dishwasher E1 error code indicates a water supply issue, often due to a leak detected inside the unit, triggering the flood/float sensor. Sympt... ✅ DIY Fixable

What Does Error E1 Mean?

The LG Dishwasher E1 error code indicates a water supply issue, often due to a leak detected inside the unit, triggering the flood/float sensor. Symptoms include the E1 code displayed on the control panel, the dishwasher stopping mid-cycle, water pooling at the base, and visible leaks around the door or hoses. Potential causes include internal leaks, improper installation, damaged door seals, clogged drains, or malfunctioning float sensors.

Common Symptoms:

  • E1 or AE code displayed on control panel
  • Dishwasher stops mid‑cycle
  • Water pooling at base or under dishwasher
  • Possible visible leaks around door or hoses

Possible Causes

  • Water leak inside dishwasher triggering float/flood sensor (high)
  • Improper installation or hose/connectors leak (medium)
  • Damaged or worn door gasket/seal causing water escape (medium)
  • Clogged drain or filter leading to water accumulation (medium)
  • Malfunctioning float sensor or related assembly (medium)

How to Fix Error E1

DIY Fix Inspect for leaks and basic diagnostics

  1. Turn off and unplug dishwasher
  2. Check around base, hoses, and under door for water or drips
  3. Ensure dishwasher is level
  4. Inspect door gasket for damage or misalignment
  5. Check drain hose position and for kinks or leaks

DIY Fix Clean filters and drainage

  1. Open dishwasher and remove bottom rack
  2. Remove and clean the filter at bottom of tub
  3. Check drain area and hose for debris or blockage
  4. Reassemble components and run short cycle

Technician Only Test and replace faulty float sensor

  1. Disconnect power and water supply
  2. Access base pan and remove flood sensor
  3. Test float sensor with multimeter for proper operation
  4. Replace sensor if defective

Parts needed: Flood/float sensor

Technician Only Repair/replace leaking components

  1. Inspect and tighten or replace drain and inlet hoses and clamps
  2. Replace damaged door gasket/seals
  3. Inspect sump and pump assembly for leaks and replace as needed

Parts needed: Door gasket, Hoses and clamps, Sump/pump assembly

🛑 When to Call a Pro:
  • If internal leak source cannot be identified
  • If replacing basic components (gasket, hoses) does not clear error
  • If electrical or major component faults are suspected

Technical Specifications

wattage N/A
component Water Inlet Valve
resistance N/A
part_number LG 5221ER1003A
voltage_rating 120V AC

Common Questions

What does E1 error mean on LG Dishwasher?

E1 error indicates a water supply issue, often due to a leak detected inside the dishwasher.

Can I fix LG Dishwasher E1 error myself?

Yes, you can inspect for leaks, clean filters, and check for blockages.

How much does it cost to fix E1 error?

Estimated repair costs range from $30 to $80 for parts like the float sensor.

When should I call a technician for E1?

Call a technician if you can't identify the leak or if replacing parts doesn't resolve the error.

Sources & References

Data last verified: 2026-01-10

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