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Error code reference

AEG Washer Error Code E20

No water drain

AEG codesAEG washer codes

No water drain - pump blocked/not running, pump interruption, reduced pumping capacity, pressure switch defective, pressure sensor defective, or electronics defective.

First step from the service manual

Remove foreign objects from pump.

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

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What E20 means on a AEG washer

The E20 error code on an AEG washer indicates a failure in the drain system. The machine has detected that water is not being pumped out within the expected timeframe during a drain cycle. This can stem from several points of failure across the drain circuit, including a blocked or seized drain pump, a partial or total pump interruption, or reduced pumping capacity caused by a partially obstructed impeller. The wash drum retains water when this fault is active, and the cycle halts to prevent overflow or mechanical damage.

The drain pump is the first component to inspect. Foreign objects such as coins, buttons, hair clips, and small garments frequently pass through the drum and become lodged in the pump housing or impeller. Even a partial blockage can slow pump output enough to trigger the fault. If the pump receives power but fails to run, the motor winding may have failed and the pump assembly will require replacement. A complete electrical interruption in the pump circuit, such as a broken wire or failed connector, will also produce this code.

Beyond the pump itself, the pressure switch and pressure sensor play a role in this fault. These components monitor the water level in the drum and report drain status to the control board. A defective pressure switch may incorrectly signal that water is still present even after a successful drain, causing a false E20 trigger. If all mechanical and sensor components check out, the electronics or control board may be the source, though this is the least common cause and should be investigated only after ruling out simpler failures.

Source: manufacturer service documentation.

Common causes of E20

  1. 01

    Foreign object blocking the pump

    Wiring / connection

    Small items like coins, buttons, or hair clips can pass through the drum seal and lodge in the drain pump housing or impeller, restricting or stopping water flow. Check and clean the pump filter and housing as the first diagnostic step.

  2. 02

    Failed drain pump motor

    Part replacement

    If the pump receives power but does not run, the pump motor winding has likely failed. This can be confirmed by checking for voltage at the pump terminals during a drain cycle while the pump remains silent.

  3. 03

    Reduced pumping capacity from partial blockage

    Wiring / connection

    A partially blocked impeller or kinked drain hose can allow some water movement but not enough to satisfy the control board's drain timing threshold, triggering E20. Inspect the entire drain hose path for restrictions.

  4. 04

    Defective pressure switch or pressure sensor

    Part replacement

    The pressure switch or sensor monitors water level and communicates drain completion to the control board. A faulty unit may falsely report water still present in the drum even after draining has occurred, producing a false E20.

  5. 05

    Defective control board or wiring fault

    Part replacement

    A failed control board or a broken wire or connector in the pump circuit can interrupt the pump's operation entirely. This should be investigated only after all other components have been tested and cleared.

See the test procedure for each cause

Frequently asked questions about E20

What does E20 mean on a AEG washer?
E20 on an AEG washer signals that the machine cannot drain water properly. The fault covers several possible causes including a blocked drain pump, a failed pump motor, reduced pumping capacity, a defective pressure switch or pressure sensor, or a problem with the control electronics. The machine stops the cycle to prevent damage when this code appears.
How do I fix an E20 error on my AEG washer?
Start by locating the drain pump filter, usually behind a small access panel at the front lower section of the machine, and remove any foreign objects such as coins, clips, or debris. After cleaning the filter and pump housing, run a drain or spin cycle to see if the error clears. If the blockage is not the issue, further diagnosis of the pump motor, pressure sensor, wiring, and control board will be needed.
Is it safe to use my AEG washer while it shows E20?
No, you should not continue using the washer while E20 is active. The drum likely contains standing water, and the machine has halted the cycle as a protective measure. Running further cycles without resolving the drain fault can stress other components and may leave laundry sitting in water for extended periods.
Will resetting my AEG washer clear the E20 error?
A reset may temporarily clear the code, but if the underlying cause is not fixed, the error will return as soon as the machine attempts to drain again. A reset is only useful as a step after you have physically cleared a blockage or replaced a faulty component to confirm the repair was successful.
How much does it cost to repair an AEG washer E20 error?
If the fix is simply clearing a blocked pump filter, the repair costs nothing beyond your time. If the drain pump motor has failed, replacement pump assemblies typically range from $40 to $120 for the part, with professional labor adding $80 to $200 depending on your location. A faulty pressure sensor is generally less expensive, while a control board replacement sits at the higher end of repair costs, often $150 to $350 or more for parts alone.

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