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Appliance Fix Guide

Whirlpool Dishwasher error code

Whirlpool Dishwasher Error F18

Turn off power at circuit breaker.

Turn off power at circuit breaker.

ModerateStart with 5-15 minutes of safe checks
⚠️ CHECK WARRANTY / AGE$100 - $250 Range
Whirlpool dishwasher repair guide for error F18
Error codeF18Dishwasher

Try these first

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

  1. 1
    Turn off power at circuit breaker

    Turn off power at circuit breaker.

  2. 2
    Remove lower access panel

    Remove lower access panel.

  3. 3
    Locate drain solenoid on side of pump assembly

    Locate drain solenoid on side of pump assembly.

A quick explanation

What does F18 mean?

Turn off power at circuit breaker.

The answer you came for

How to fix Whirlpool dishwasher error F18

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

  1. 1

    Turn off power at circuit breaker

    Turn off power at circuit breaker.

  2. 2

    Remove lower access panel

    Remove lower access panel.

  3. 3

    Locate drain solenoid on side of pump assembly

    Locate drain solenoid on side of pump assembly.

  4. 4

    Disconnect electrical connector from solenoid

    Disconnect electrical connector from solenoid.

  5. 5

    Remove 2 mounting screws securing solenoid bracket

    Remove 2 mounting screws securing solenoid bracket.

  6. 6

    Carefully remove old solenoid and plunger assembly

    Carefully remove old solenoid and plunger assembly.

  7. 7

    Clean solenoid mounting surface and plunger shaft with

    Clean solenoid mounting surface and plunger shaft with fine sandpaper.

  8. 8

    Apply light grease to new plunger shaft

    Apply light grease to new plunger shaft.

  9. 9

    Install new solenoid assembly with new gasket

    Install new solenoid assembly with new gasket.

  10. 10

    Secure mounting screws to 6 inch-pounds

    Secure mounting screws to 6 inch-pounds.

  11. 11

    Reconnect electrical connector

    Reconnect electrical connector.

  12. 12

    Reinstall access panel

    Reinstall access panel.

Read the additional checks from the current guide

How to Fix Dishwasher Error Turn off power at circuit breaker.Remove lower access panel.Locate drain solenoid on side of pump assembly.Disconnect electrical connector from solenoid.Remove 2 mounting screws securing solenoid bracket.Carefully remove old solenoid and plunger assembly.Clean solenoid mounting surface and plunger shaft with fine sandpaper.Apply light grease to new plunger shaft.Install new solenoid assembly with new gasket.Secure mounting screws to 6 inch-pounds.Reconnect electrical connector.Reinstall access panel.Restore power and test drain cycle, listening for proper solenoid engagement click and complete drainage. As an Amazon Associate, we earn from qualifying purchases through links on this page. Recommended Parts to Check This page already had a Whirlpool part recommendation. Verify the complete appliance model number before ordering, because part fit can vary by model revision. Whirlpool part search: W10476487 Estimated part range: $120-$250 Fit note: Confirm this part against the full Whirlpool dishwasher model number before buying. Search Amazon for W10476487

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

No replacement part recommended for this code

The researched guidance for Whirlpool Dishwasher error F18 points to user-action and diagnostic steps above rather than a mapped replacement part. We will not invent a part or send you to an unrelated product.

Replacement options

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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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