Lg Washing Machine Error F4

⚡ Quick Answer: The LG washing machine F4 error indicates a potential failure in the door lock mechanism, which can prevent the machine from starting. Users may notic... ✅ DIY Fixable

What Does Error F4 Mean?

The LG washing machine F4 error indicates a potential failure in the door lock mechanism, which can prevent the machine from starting. Users may notice the door not locking properly, and the machine may display the F4 code during the wash cycle, leading to a halt in operation. This error may also be linked to issues with water filling or sensing, although the exact cause remains unverified.

Common Symptoms:

  • Machine displays F4 code during wash cycle
  • Machine may stop operation or fail to proceed
  • Possibly associated with filling or sensing issues (based on community reports)

Possible Causes

  • Door Lock Assembly
  • Wiring Issues
  • Control Board Malfunction

How to Fix Error F4

DIY Fix Basic checks for water supply and hoses

  1. Ensure water supply valves are fully open.
  2. Check that inlet hoses are connected properly and not kinked or blocked.
  3. Inspect inlet hose filters and clean debris if present.
  4. Power cycle the washing machine (turn off, wait ~1 minute, then on again) and see if error persists.

Technician Only Professional diagnosis and repair

  1. Use OEM diagnostic tools to read error logs and confirm true fault code meaning for this specific LG model.
  2. Inspect water inlet valve, pressure sensor and related wiring.
  3. Test temperature sensors and control board per manufacturer testing procedures.
  4. Repair or replace failed components as identified.

Parts needed: Water inlet valve, Pressure sensor / water level sensor, Temperature sensor (if applicable), Control board (if indicated by diagnostics)

🛑 When to Call a Pro:
  • If the F4 error persists after basic checks.
  • If water supply and hoses appear normal but the machine fails to fill or operate.
  • If diagnostic steps require access to internal components.

Technical Specifications

wattage N/A
component Door Lock Assembly
resistance 10-20 ohms
part_number LG 6601N-001655
voltage_rating 120V AC

Common Questions

What does F4 error mean on LG washing machine?

F4 indicates a possible door lock failure, preventing the machine from starting.

Can I fix LG washing machine F4 error myself?

Yes, check water supply, hoses, and filters for blockages.

How much does it cost to fix F4 error?

Repair costs vary based on parts and labor; a technician assessment is needed.

When should I call a technician for F4?

Call a technician if the error persists after basic checks or if internal components need access.

Sources & References

Data last verified: 2026-01-11

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