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Appliance Fix Guide

LG Washer error code

LG Washer Error 4C

This is an error with the cold water supply.

This is an error with the cold water supply.

ModerateStart with 5-15 minutes of safe checks
Diagnose before buying a part
LG washer repair guide for error 4C
Error code4CWasher

Try these first

Start here before buying a part or taking the appliance apart.

  1. 1
    This is an error with the cold water

    This is an error with the cold water supply. First, ensure the cold water faucet connected to the washer is turned on fully.

  2. 2
    Check the cold water inlet hose for any

    Check the cold water inlet hose for any kinks or twists that could block water flow.

  3. 3
    Turn off the water, disconnect the hose from

    Turn off the water, disconnect the hose from the back of the washer, and check the small filter screen inside the inlet port for debris. Clean it if necessary.

A quick explanation

What does 4C mean?

This is an error with the cold water supply.

The answer you came for

How to fix LG washer error 4C

Start with the safest checks and work from simple to technical.

  1. 1

    This is an error with the cold water

    This is an error with the cold water supply. First, ensure the cold water faucet connected to the washer is turned on fully.

  2. 2

    Check the cold water inlet hose for any

    Check the cold water inlet hose for any kinks or twists that could block water flow.

  3. 3

    Turn off the water, disconnect the hose from

    Turn off the water, disconnect the hose from the back of the washer, and check the small filter screen inside the inlet port for debris. Clean it if necessary.

  4. 4

    If the above steps don't work, the cold

    If the above steps don't work, the cold water inlet valve has failed. Unplug the washer, replace the valve assembly, and reconnect the hoses and wiring.

Read the additional checks from the current guide

How to Fix 4c Error This is an error with the cold water supply. First, ensure the cold water faucet connected to the washer is turned on fully.Check the cold water inlet hose for any kinks or twists that could block water flow.Turn off the water, disconnect the hose from the back of the washer, and check the small filter screen inside the inlet port for debris. Clean it if necessary.If the above steps don't work, the cold water inlet valve has failed. Unplug the washer, replace the valve assembly, and reconnect the hoses and wiring.

If the code comes back

Do not keep replacing parts based only on the code. Repeat the safe checks above. If the fault remains, stop and arrange qualified service rather than ordering from the code alone.

Recommended part

Recommended part for this error code

Part listed in the current guide

OEM candidate: 5221ER1003A (Cold Water Inlet Valve)

Why this part is shown: It is associated with LG Washer error 4C in the current guide. The error code alone does not prove this part has failed.

Compatibility varies by model. Confirm that the Amazon listing includes your complete washer model number before ordering.

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Replacement options

Ready to replace your washer?

If repairing this washer no longer feels worthwhile, compare three replacement paths below.

Why shop your replacement on Amazon?

  • Fast, free delivery

    Prime members can get fast, free delivery on eligible items.

  • Convenient delivery options

    Select large appliances may offer scheduled or Room of Choice delivery.

  • Haul-away options

    Haul-away may be available for select appliances and delivery areas.

  • Installation help

    Installation or assembly may be available on select items.

Delivery and service options, fees, and availability vary by item, seller, and delivery ZIP code. Confirm available services at Amazon checkout.

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Make the money decision

Repair or replace calculator

Use the age and total repair estimate to get a simple comparison. This is guidance, not a guarantee.

Safety first

Disconnect power before opening panels or touching internal parts.

When to stop
  • Stop if you see burned wiring, melted connectors, water near electrical parts, or a gas smell.
  • Do not perform live-voltage testing unless you are trained and equipped for it.
  • Use the exact model manual or service information before replacing electronic controls.

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