mypros+
Error code reference

Electrolux Washer Error Code 31

Electronic pressure switch error.

Electrolux codesElectrolux washer codes

Electronic pressure switch error.

First step from the service manual

Refer to test (4) - Inspect wiring between pressure sensor and main control board.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for 31.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 31 means on a Electrolux washer

Error code 31 on an Electrolux washer indicates a fault in the electronic pressure switch circuit. The pressure switch, also called a pressure sensor or water level sensor, is responsible for detecting the amount of water inside the drum and communicating that information to the main control board. When the control board cannot read a valid signal from the pressure sensor, or when the signal falls outside expected parameters, it triggers error code 31 and halts the wash cycle to prevent overfilling or running the pump dry.

The pressure sensor operates by monitoring air pressure through a small hose connected to the tub. As water fills the drum, air is compressed in this hose and the sensor converts that pressure into an electrical signal sent to the main control board. A breakdown anywhere along this communication path, whether in the sensor itself, the connecting wiring harness, or the control board, can produce this error. Corroded connectors, pinched or broken wires, and loose terminal connections are common points of failure in this circuit.

The first diagnostic step for error code 31 is to inspect the wiring between the pressure sensor and the main control board, as outlined in test procedure 4 for this model. Technicians should check for continuity through the harness, look for visible damage or corrosion at connector pins, and verify that all connectors are fully seated. If the wiring is intact, the pressure sensor itself should be tested and potentially replaced. A failed main control board is also possible but is generally the least likely cause.

Source: manufacturer service documentation.

Common causes of 31

  1. 01

    Loose or corroded wiring harness connection

    Wiring / connection

    The connector between the pressure sensor and the main control board may have worked loose or developed corrosion on the pins, interrupting the signal. Inspect both ends of the harness for secure seating and clean terminal pins.

  2. 02

    Damaged wiring between sensor and control board

    Part replacement

    The wire harness running from the pressure sensor to the main control board may have a pinched, broken, or chafed wire causing an open or short circuit. Check the full length of the harness for visible damage and test for continuity.

  3. 03

    Faulty electronic pressure switch

    Part replacement

    The pressure sensor itself may have failed internally and can no longer produce a valid signal. If the wiring checks out correctly, the sensor should be tested for proper output and replaced if defective.

  4. 04

    Blocked or kinked pressure sensor hose

    Wiring / connection

    The small air hose connecting the tub to the pressure sensor can become kinked, clogged with residue, or disconnected, preventing accurate pressure readings. Inspect the hose for blockages, kinks, and secure connections at both ends.

  5. 05

    Failed main control board

    Part replacement

    If the wiring, connectors, sensor hose, and pressure sensor all test correctly, the main control board may have a fault in the circuit that reads the sensor signal. Board replacement is typically a last resort after all other components are ruled out.

See the test procedure for each cause

Frequently asked questions about 31

What does 31 mean on a Electrolux washer?
Error code 31 on an Electrolux washer indicates an electronic pressure switch error. The pressure switch is the sensor that monitors the water level inside the drum and reports that information to the main control board. When the board detects an invalid or missing signal from this sensor, it displays code 31 and stops the cycle. The problem is most often traced to a wiring issue between the sensor and the control board.
Can I fix error code 31 on my Electrolux washer myself?
Some causes of error code 31 can be addressed without professional help. Start by checking that the wiring harness connectors between the pressure sensor and the main control board are fully seated and free of corrosion. Also inspect the small air hose connected to the pressure sensor for kinks or blockages. If the wiring and hose appear fine but the error persists, replacing the pressure sensor or control board typically requires a technician.
Is it safe to keep using my washer when error code 31 is showing?
It is not recommended to continue using the washer while error code 31 is active. Without a reliable water level reading, the control board cannot properly regulate filling, which could lead to overfilling or damage to the pump from running dry. The washer will generally halt the cycle when this code appears, and the underlying issue should be diagnosed before running additional loads.
How much does it cost to repair error code 31 on an Electrolux washer?
Repair costs depend on the root cause. If only the wiring or a connector needs attention, costs may be minimal, mostly covering a service call in the range of $75 to $150. A replacement pressure sensor typically adds $20 to $60 in parts. If the main control board is the culprit, parts alone can range from $100 to $300 or more, with total repair costs potentially reaching $200 to $450 including labor.
Will resetting my Electrolux washer clear error code 31?
A reset may temporarily clear the error code display, but it will not resolve the underlying fault in the pressure switch circuit. If the wiring connection, sensor, or hose issue is still present, the code will return once the washer attempts to run a cycle and the control board cannot read a valid pressure sensor signal. A proper diagnosis and repair of the faulty component is necessary for a lasting fix.

Related Electrolux washer codes

All Electrolux washer codes
View all 231 Electrolux washer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass