Frigidaire Washer Error Code E91: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
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Error Code
E91
Brand
Frigidaire
Product Type
washer
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code E91 on your Frigidaire washer indicates a communication fault between the main control board and the display board. This means the control board is not receiving signals from the display, or vice versa. Most often, this is due to loose wiring, a faulty display board, or a faulty main control board.
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Tools You'll Need

How to Fix Error Code E91

  1. Unplug the Washer and Perform a Hard Reset

    Always unplug the appliance before any inspection.

  2. Check the Wiring Connections Between the Boards

    Discharge any static electricity by touching a metal part of the washer before handling boards.

  3. Inspect the Display Board for Damage

  4. Test the Main Control Board

    Be cautious of high-voltage components even when unplugged; capacitors can hold a charge.

  5. Replace the Faulty Board

    Ensure the replacement part matches your washer's model number exactly.

Parts You May Need

Display board
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Main control board
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Display board
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Main control board
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Display board
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Main control board
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Display board
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Main control board
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When to Call a Professional

If you have visually inspected both boards and all connections, but the error persists, the issue may be intermittent or require specialized diagnostics. A qualified appliance technician can run advanced tests and replace the main control board if needed.

Frequently Asked Questions

Can error code E91 be fixed by unplugging the washer?
Yes, sometimes a simple hard reset (unplugging for 5 minutes) can clear a temporary communication glitch. Try this first before proceeding with other fixes.
What causes a communication fault on a Frigidaire washer?
Common causes include loose wiring connectors, a faulty display board, a faulty main control board, or moisture damage to the electronics.
How much does it cost to repair a Frigidaire washer error E91?
If you DIY, a replacement display board costs around $50-$100, and a main control board $100-$200. Hiring a professional can add $100-$200 for labor.
Is error code E91 serious?
It is medium severity. The washer may not operate at all. While not dangerous, it halts usage until the communication issue is resolved.
Can I still use my washer with error E91?
No, typically the washer will not start or complete any cycle. You need to fix the error first.

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