Bosch Washer Error Code F08: How to Fix It

Hard 2-3 hours High Severity Verified June 2026
Error Code
F08
Brand
Bosch
Product Type
washer
Severity
High
DIY Difficulty
Hard
Estimated Fix Time
2-3 hours
Bosch washer error code F08 indicates a heating element fault, meaning either the heating element has burned out or the relay controlling it is stuck. This error prevents your washer from heating water properly, affecting wash performance and potentially stopping cycles completely.
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Tools You'll Need

How to Fix Error Code F08

  1. Turn off power and water supply

    Always disconnect power before working on electrical components to prevent shock or electrocution.
  2. Access the heating element

    Take photos of wire connections before disconnecting to ensure proper reassembly.
  3. Test the heating element with a multimeter

    Ensure all wires are disconnected before testing to get accurate readings.
  4. Check for ground faults

  5. Inspect the heating element relay

  6. Replace faulty components

    Do not overtighten the heating element mounting nut as this can crack the tub.
  7. Reconnect wires and test

Parts You May Need

Washer heating element
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Heating element gasket
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Control board relay
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Control board relay
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Washer heating element
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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Heating element gasket
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Control board relay
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Washer heating element
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When to Call a Professional

Call a professional if you're uncomfortable working with electrical components, can't access the heating element due to your washer's design, or if the control board shows signs of damage. Also consider professional help if multiple components are failing, which may indicate a larger electrical issue.

Frequently Asked Questions

Can I still use my Bosch washer with error code F08?
No, you should not use the washer with error F08. The heating element fault can cause incomplete cycles, poor cleaning performance, and potential safety hazards. The washer may not complete cycles or may damage clothes with inconsistent temperatures.
How much does it cost to replace a Bosch washer heating element?
A replacement heating element typically costs $50-150, while professional installation can add $100-200 in labor costs. The total repair cost usually ranges from $150-350 depending on your location and service provider.
What causes Bosch washer heating elements to fail?
Heating elements commonly fail due to mineral buildup from hard water, age-related wear, power surges, or manufacturing defects. Regular maintenance and using water softener can help extend element life.
How long do Bosch washer heating elements typically last?
Bosch washer heating elements typically last 5-10 years with normal use. Factors like water hardness, usage frequency, and maintenance affect lifespan. Hard water areas may see shorter element life due to mineral buildup.
Can error code F08 be caused by something other than the heating element?
Yes, F08 can also be caused by a faulty heating element relay, damaged wiring, or control board issues. While the heating element is the most common cause, proper diagnosis with a multimeter is essential to identify the exact problem.