Electrolux Washer Error Code E31

E31 indicates that the electronic pressure switch, which monitors water level inside the tub, is producing a frequency signal outside the acceptable range of 36.130 to 44.676 Hz for at least 5 continuous seconds. The washer stops operation to prevent overfilling or an incorrect wash cycle from running. The fault typically points to a failed pressure switch, a blocked air pressure hose, or a wiring issue between the sensor and the control board.

You should not continue running the washer with an active E31 code. The pressure switch is responsible for monitoring water level, and if it is malfunctioning, the washer cannot reliably detect an overfill condition. Running the machine in this state risks water overflow and potential water damage to your home or the appliance.

Repair costs vary depending on the failed component. A replacement electronic pressure switch typically costs between $20 and $60 for the part, while professional labor adds $75 to $150 or more depending on your area. If the main control board is the cause, parts alone can range from $100 to $300, making that a significantly more expensive repair.

Some causes of E31 are DIY-accessible, such as clearing a clogged air pressure hose, reseating a loose wiring connector, or cleaning corrosion from the pressure switch terminals. If the pressure switch itself has failed, replacing it requires locating the correct part and basic appliance disassembly skills. Main control board replacement is more complex and may be better left to a qualified technician.

A reset may temporarily clear the E31 code, but if the underlying fault in the pressure switch, hose, or wiring is still present, the error will return once the washer attempts to fill and the sensor signal goes out of range again. A reset alone does not fix the hardware problem causing the fault.