How to Fix Whirlpool Washer Error F09

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⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.

Error Code: Washer Difficulty: Moderate

Problem: Overflow condition detected – pressure switch stuck closed or control board fault

⚖️ Repair Decision

⚠️ CHECK WARRANTY / AGE

$100 – $250 Range

How to Fix Washer Error

Unplug washer immediately to prevent flooding.
Check base pan for standing water indicating actual overflow.
Remove top panel to access pressure switch mounted on right side wall.
Disconnect pressure hose from switch and blow through it to clear moisture/debris.
With hose disconnected, multimeter should show NO continuity across switch terminals.
Reconnect hose and gently blow into it while monitoring continuity (should close at ~
5 PSI).
If switch stuck closed (always shows continuity), replace pressure switch W
Inspect pressure hose for cracks, kinks, or water accumulation (replace if damaged).
If switch tests good but error persists, replace main control board W
After repair, run diagnostic cycle monitoring water level detection.

OEM Part #: W10413879

Estimated Market Price: $120

If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

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Appliance Type

Appliance Age

Estimated repair cost (parts, or parts + labor) Most DIY parts are $50–$250. If you have a quote, use the total.

Is it under warranty?

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EPA Section 608 Certified Technician with 18+ years experience.