⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: E91 Difficulty: Hard
Problem: Communication error between the user interface and the main control board.
How to Fix E91 Error (Step-by-Step)
- Unplug the dryer to avoid electrical shock and confirm the error stays cleared during a full test cycle.
- Remove the top panel to access the user interface and main control board.
- Check the wiring harness that connects the user interface to the main control board. Look for any loose plugs, pinched wires, or signs of damage.
- Disconnect the wiring harness from both boards and then securely reconnect it to ensure a good connection.
- If the wiring appears to be in good condition, the issue is likely with either the user interface board or the main control board.
- A service would typically diagnose which board is faulty, but as a homeowner, you may need to start by replacing the user interface board.
- If replacing the user interface board does not solve the problem, the main control board will need to be replaced.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
Recommended Replacement Part
Verified Compatible Alternatives:
- 5304521513
- 134557200NH
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
Most DIY parts are $50–$250. If you have a quote, use the total.
More options (for a better recommendation)
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Electrolux error codes: Electrolux Error Codes
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