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

Next step

Choose the next step for E1

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Door Gasket

Creates a watertight seal around the door to prevent leaks during operation.

Typical part-only price
$45 - $110
DIY difficulty
Medium
Estimated time
30-60 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Model number required

Model-compatible Dishwasher parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dishwasher Cleaner and Descaler

Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.

View maintenance supply
Maintenance supply

Braided Dishwasher Inlet Hose

For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

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: 2026-07-26

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