KitchenAid Dishwasher Error Code 6-3: How to Fix It

Medium 30-60 minutes Critical Severity Verified June 2026
Error Code
6-3
Brand
KitchenAid
Product Type
dishwasher
Severity
Critical
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 6-3 (also shown as F6 E3) on your KitchenAid dishwasher indicates a water leak has been detected and the float switch has been activated. This is a critical safety feature that shuts down the dishwasher to prevent water damage to your kitchen floor and cabinets.
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Tools You'll Need

How to Fix Error Code 6-3

  1. Turn off power and water supply

    Always disconnect power before performing any dishwasher repairs to prevent electrical shock.
  2. Remove standing water from the base

  3. Access the dishwasher base

  4. Locate and reset the float switch

  5. Inspect for visible leaks

  6. Check the door seals and gaskets

  7. Examine hose connections

  8. Test the repair

    Stay nearby during the test cycle to shut off water immediately if leaking resumes.

Parts You May Need

Door seal gasket
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Water supply hose
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Door seal gasket
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Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
Door seal gasket
Check Price on Amazon
Water supply hose
Check Price on Amazon
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When to Call a Professional

Call a professional if you cannot locate the leak source, if the float switch mechanism is damaged, if internal pumps or motors are leaking, or if you're uncomfortable working with water and electrical connections. Also contact a pro if multiple components need replacement or if the leak is coming from the dishwasher tub itself.

Frequently Asked Questions

What does error code 6-3 mean on my KitchenAid dishwasher?
Error code 6-3 (or F6 E3) means your dishwasher has detected a water leak and activated the safety float switch to prevent water damage. The dishwasher will not operate until the leak is found and repaired.
Can I reset KitchenAid dishwasher error 6-3?
You can try resetting the float switch by gently pressing it down, but the error will return if the underlying leak isn't fixed. Simply clearing the error code without repairing the leak can cause water damage to your kitchen.
How much does it cost to fix a dishwasher leak?
Repair costs vary depending on the leak source. Simple fixes like tightening hose clamps cost nothing, while replacing door seals typically costs $50-100 in parts. More complex internal leaks requiring pump or motor replacement can cost $200-400 including labor.
Is it safe to run my dishwasher with error code 6-3?
No, never run your dishwasher with error code 6-3 showing. This error indicates active water leaking that could damage your floor, cabinets, or cause electrical hazards. Fix the leak before using the dishwasher again.
Where is the float switch on my KitchenAid dishwasher?
The float switch is typically a white or clear dome-shaped component located in the front corner of the dishwasher floor, either on the left or right side. It rises when water collects in the base pan underneath the dishwasher tub.