Bosch Washer Error Code F23: How to Fix It

Medium 30-60 minutes Critical Severity Verified June 2026
Error Code
F23
Brand
Bosch
Product Type
washer
Severity
Critical
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
The F23 error code on your Bosch washer indicates that the Aquastop system has detected water in the base tray, meaning there's a leak somewhere in the machine. This is a critical safety feature that prevents water damage to your home by shutting down the washer when a leak is detected.
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Tools You'll Need

How to Fix Error Code F23

  1. Immediately stop the cycle and unplug the washer

    Never attempt repairs while the washer is plugged in. Water and electricity are dangerous together.
  2. Turn off the water supply

  3. Check for visible external leaks

  4. Inspect the door seal and gasket

    Be gentle when inspecting the rubber seal as it can be easily damaged.
  5. Check the detergent dispenser area

  6. Examine the drain pump filter

    Have towels ready as water will spill out when you open the filter access.
  7. Reset the Aquastop system

  8. Test with a small load

    Stop immediately if the F23 error returns or if you notice any new leaks.

Parts You May Need

Water inlet hoses
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Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
Water inlet hoses
Check Price on Amazon
Door seal/boot gasket
Check Price on Amazon
Detergent dispenser drawer
Check Price on Amazon
Drain pump filter
Check Price on Amazon
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When to Call a Professional

Call a professional technician if the F23 error persists after checking external connections and cleaning accessible components. Internal leaks from the water pump, internal hoses, or tub damage require specialized tools and expertise to repair safely. Also contact a pro if you're uncomfortable working with water and electrical appliances.

Frequently Asked Questions

What does F23 mean on my Bosch washer?
F23 indicates that your Bosch washer's Aquastop system has detected water in the base tray, meaning there's a leak somewhere in the machine. This safety feature automatically shuts down the washer to prevent water damage.
Can I still use my Bosch washer with F23 error?
No, you should not use your washer when the F23 error is displayed. This error indicates an active leak that could cause water damage to your home. The washer will not operate until the leak is fixed and the system is reset.
How do I reset the Aquastop system on my Bosch washer?
First, fix any visible leaks and ensure all water connections are secure. Then plug in the washer and press and hold the Start/Pause button for 3-5 seconds. If the error was caused by a minor issue that's been resolved, this should clear the F23 code.
Is F23 error expensive to fix?
The cost depends on the leak location. External issues like loose hoses or damaged door seals are relatively inexpensive to fix. Internal leaks requiring pump or internal hose replacement can cost $200-400 including parts and labor.
How can I prevent F23 errors in the future?
Regularly inspect water hoses for wear, clean the door seal and detergent dispenser, avoid overloading the washer, and use the proper amount of HE detergent. Replace inlet hoses every 5 years as preventive maintenance.