Error Code: E31 Difficulty: Hard
Problem: Moisture sensor frequency is too high.
How to Fix E31 Error (Step-by-Step)
- Unplug the dryer from the power outlet and confirm the error stays cleared during a full test cycle.
- Open the dryer door and locate the two metal moisture sensor bars (Part 134786110) inside the drum, usually near the lint filter housing.
- Clean the surfaces of the sensor bars thoroughly with a cotton ball or soft cloth dampened with rubbing alcohol. This removes any film from fabric softener sheets or detergents.
- Trace the wires from the sensor bars back to the main control board. Check the wire harness (Part 5304515376) for any loose connections, breaks, or damage.
- If cleaning the sensors and checking the wiring does not resolve the issue, the fault is likely with the main control board (Part 134994700).
- Access and replace the main control board, carefully transferring all wire connections to the new board.
- Reassemble the dryer and test a sensor-dry cycle and confirm the error stays cleared during a full test cycle.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
Recommended Replacement Part
- 134786110
- 134994700
- 5304515376
When It’s Better to Replace Than Repair
Dryer repairs are often worth it for small parts, but repeated heating, motor, drum, or control failures can point toward replacement.
Confirm gas vs electric, venting, voltage, doorway clearance, and laundry-space dimensions before ordering.
For repair parts, verify exact fit with the full dryer model number before buying; these links are general replacement-appliance shopping options.
- [OK]Thermal fuse or heater failures keep returning
- [OK]Belt, roller, or motor repairs exceed unit value
- [OK]Door switch or control issues stack with other faults
- [OK]Older dryer has long dry times even after vent cleaning
Recommended Dryer Replacement Options
As an Amazon Associate, we earn from qualifying purchases.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
More options (for a better recommendation)
⚡ Don’t Risk a DIY Fail!
Get the ‘Secret Service Mode’ Cheat Sheet for your Electrolux model. Includes an easy-to-read list of every error code and quick diagnostic tips.
✅ Join 15,000+ DIYers • Instant PDF Download
Browse More Codes
📖 View All Error Codes
Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Electrolux error codes: Electrolux Error Codes
Leave a Reply