Frigidaire Dishwasher Error Code E20: How to Fix It

Easy 20-30 minutes Medium Severity Verified June 2026
Error Code
E20
Brand
Frigidaire
Product Type
dishwasher
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
20-30 minutes
The Frigidaire dishwasher error code E20 indicates a blocked drain that prevents proper water drainage. This error typically occurs when food particles, grease, or debris clog the dishwasher's filter or drain pump. Most E20 errors can be resolved by cleaning the filter system and checking the drain components.
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Tools You'll Need

How to Fix Error Code E20

  1. Turn off power and remove water

    Always disconnect power before servicing your dishwasher to prevent electrical shock.
  2. Remove the bottom dish rack

  3. Locate and remove the cylindrical filter

  4. Remove the lower filter screen

  5. Clean all filter components thoroughly

  6. Inspect and clean the sump area

    Be careful not to push debris further down into the drain pump.
  7. Check the garbage disposal connection

  8. Reinstall filters in correct order

  9. Test the dishwasher

Parts You May Need

Dishwasher filter assembly
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Dishwasher filter assembly
Check Price on Amazon
Dishwasher filter assembly
Check Price on Amazon
Dishwasher filter assembly
Check Price on Amazon
Dishwasher filter assembly
Check Price on Amazon
Dishwasher filter assembly
Check Price on Amazon
Dishwasher filter assembly
Check Price on Amazon
Dishwasher filter assembly
Check Price on Amazon
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When to Call a Professional

Contact a professional technician if the E20 error persists after cleaning all filters and checking the drain, if you discover damaged filter components that need replacement, or if you hear unusual noises from the drain pump during operation.

Frequently Asked Questions

How often should I clean my Frigidaire dishwasher filters to prevent E20 errors?
Clean your dishwasher filters monthly for normal use, or bi-weekly if you frequently wash heavily soiled dishes. Regular maintenance prevents food buildup that causes E20 drain blockage errors.
Can I run my Frigidaire dishwasher if it shows error code E20?
No, do not run your dishwasher when it displays error code E20. The blocked drain prevents proper water drainage, which can cause water damage and worsen the blockage problem.
What causes Frigidaire dishwasher E20 errors most commonly?
The most common causes are food particles and grease buildup in the filter system, blocked garbage disposal connections, and debris in the drain pump area. Pre-rinsing dishes and regular filter cleaning prevent most E20 errors.
Will the E20 error code reset automatically after I fix the drain blockage?
Yes, the E20 error code typically clears automatically once you fix the drain blockage and run a successful wash cycle. If the error persists, there may be a more serious drain pump or control board issue.
Is it safe to use drain cleaners for Frigidaire dishwasher E20 errors?
No, never use chemical drain cleaners in your dishwasher. These chemicals can damage seals, gaskets, and internal components. Stick to manual cleaning of filters and mechanical removal of blockages.