mypros+
Error code reference

Maytag Washer Error Code 20

Filling too quickly during cycle

Maytag codesMaytag washer codes

Filling too quickly during cycle - pressure switch opens sooner than expected.

MyPros+ Max

Get the full diagnostic procedure for 20.

  • 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 20 means on a Maytag washer

Error code 20 on a Maytag washer indicates that the tub is filling with water faster than expected during a wash cycle. Specifically, the pressure switch, which monitors water level inside the drum, is opening sooner than the control board anticipates. This means the washer detects that the water level has risen to the target point in less time than the programmed fill sequence allows, triggering the fault.

The pressure switch works by sensing air pressure through a small tube connected to the tub. As water rises, it compresses the air in the tube, and the switch responds to that pressure change. When this switch opens prematurely, it signals the control board that the fill target has been reached too quickly. The most common causes include a faulty pressure switch that trips at the wrong threshold, a kinked or disconnected air dome tube, or a water inlet valve that is not regulating flow properly and allowing water to rush in at an excessive rate.

In some cases, the pressure switch hose may have a partial blockage or leak that creates an inaccurate pressure reading, causing the switch to respond incorrectly. Low water pressure is typically not the concern here since the fill is happening too fast, not too slow. Technicians should inspect the inlet valve screens, verify the pressure switch hose is intact and properly seated, and test the pressure switch for correct calibration and switching behavior before replacing components.

Source: manufacturer service documentation.

Common causes of 20

  1. 01

    Faulty pressure switch

    Part replacement

    The pressure switch may be calibrated incorrectly or failing, causing it to open and signal a full tub before the correct water level is actually reached. Testing the switch for proper switching points can confirm this issue.

  2. 02

    Water inlet valve not restricting flow

    Part replacement

    A water inlet valve that is stuck open or not closing properly between fill cycles can allow water to rush into the tub faster than expected. Inspect the valve for signs of debris, wear, or solenoid failure.

  3. 03

    Kinked or misrouted pressure switch hose

    Wiring / connection

    The air dome tube connecting the tub to the pressure switch can become kinked, pinched, or disconnected, causing an inaccurate pressure reading that makes the switch trip prematurely. Visually trace the hose from the tub fitting to the switch and check for any obstructions or disconnections.

  4. 04

    Leaking or cracked pressure switch hose

    Part replacement

    A small crack or loose connection in the pressure hose allows air to escape, which alters the pressure signal sent to the switch and can cause premature activation. Inspect the full length of the hose and both connection points for cracks or loose fittings.

  5. 05

    Control board fault

    Part replacement

    If the control board is misinterpreting the timing of the fill cycle due to an internal fault, it may register an error even when the pressure switch and inlet valve are functioning correctly. This is the least likely cause and should be considered only after other components have been tested and ruled out.

See the test procedure for each cause

Frequently asked questions about 20

What does 20 mean on a Maytag washer?
Error code 20 on a Maytag washer means the tub is filling with water faster than the control board expects during the wash cycle. The pressure switch, which monitors water level, is opening sooner than the programmed fill sequence allows. This typically points to a problem with the pressure switch, the pressure hose, or the water inlet valve. The washer stops the cycle to prevent a potential overfill situation.
Can I fix error code 20 on my Maytag washer myself?
Some causes of error code 20 are DIY-friendly, such as inspecting and reseating a disconnected or kinked pressure switch hose. However, testing and replacing the pressure switch or water inlet valve requires basic electrical diagnostic skills and a multimeter. If you are not comfortable working with appliance wiring and components, it is best to contact a qualified technician.
Is it safe to run my Maytag washer with error code 20 active?
It is not recommended to continue running the washer while error code 20 is active. The code indicates a potential issue with how water is filling the tub, and running the machine without diagnosing the problem could lead to overfilling or water damage. Address the underlying cause before resuming normal use.
Will resetting my Maytag washer clear error code 20?
Resetting the washer by unplugging it for a few minutes may temporarily clear the error code, but the code will likely return if the underlying problem has not been resolved. The fault is triggered by a specific condition during the fill cycle, so a reset alone is not a repair. Diagnose and fix the root cause to prevent the code from returning.
How much does it cost to repair a Maytag washer with error code 20?
Repair costs for error code 20 vary depending on the faulty component. A replacement pressure switch typically ranges from $15 to $50 for the part, while a water inlet valve can range from $25 to $80. If professional labor is required, expect to add $75 to $150 or more for a service call and installation. Costs can vary by region and service provider.

Related Maytag washer codes

All Maytag washer codes
View all 404 Maytag washer codes

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

Get Started

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