Thermador Oven Error Code E190: How to Fix It

Hard 2-4 hours High Severity Verified June 2026
Error Code
E190
Brand
Thermador
Product Type
oven
Severity
High
DIY Difficulty
Hard
Estimated Fix Time
2-4 hours
Error code E190 on your Thermador oven indicates EEPROM corruption, which means the control board's memory has been damaged or corrupted. This is a serious error that affects the oven's ability to store and recall essential operating data. The error typically requires control board replacement or professional reprogramming.
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Tools You'll Need

How to Fix Error Code E190

  1. Turn off power to the oven

    Always disconnect power before working on electrical appliances to prevent shock or electrocution.
  2. Attempt a hard reset

  3. Access the control board

    Ensure the oven is completely cool before attempting to access internal components.
  4. Inspect the control board

    Do not touch electronic components with bare hands - use an anti-static wrist strap if available.
  5. Document wire connections

  6. Test with multimeter

    Only perform electrical testing if you are experienced with multimeters and electrical safety.
  7. Replace control board if necessary

    Ensure the replacement part matches your oven's exact model number for proper compatibility.
  8. Reassemble and test

Parts You May Need

Main control board
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Wire harness connectors
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Main control board
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Wire harness connectors
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Main control board
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Wire harness connectors
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Main control board
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Wire harness connectors
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Main control board
Check Price on Amazon
Wire harness connectors
Check Price on Amazon
Main control board
Check Price on Amazon
Wire harness connectors
Check Price on Amazon
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When to Call a Professional

Call a professional if you're uncomfortable working with electrical components, if the multimeter readings are abnormal, or if the error persists after control board replacement. EEPROM reprogramming typically requires specialized equipment and software that only certified technicians have access to.

Frequently Asked Questions

What causes Thermador oven error code E190?
Error E190 is caused by EEPROM corruption in the main control board. This can result from power surges, electrical interference, component aging, or manufacturing defects in the memory chip.
Can I fix E190 error without replacing the control board?
Sometimes a hard reset can resolve minor EEPROM issues, but most E190 errors require either professional reprogramming or control board replacement. The EEPROM chip itself cannot be repaired once corrupted.
How much does it cost to fix Thermador E190 error?
Professional repair typically costs $300-600, with most of the expense being the replacement control board ($250-450). Labor costs vary by location but generally range from $100-200.
Is Thermador E190 error covered under warranty?
If your Thermador oven is still under warranty, the E190 error repair should be covered. Contact Thermador customer service with your model and serial number to verify warranty status.
How can I prevent E190 error from happening again?
Use a surge protector, ensure proper electrical grounding, avoid power cycling the oven frequently, and maintain stable electrical supply. Regular professional maintenance can also help identify potential issues early.