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Error code reference

AEG Washer Error Code E8

Tachogenerator short circuit or open circuit, motor short circuit or open circuit, motor blocked, cable from…

AEG codesAEG washer codes

Tachogenerator short circuit or open circuit, motor short circuit or open circuit, motor blocked, cable from motor board to main board defective, or MOS-FET transistor defective.

First step from the service manual

Replace tachogenerator; replace motor; clear blockage; replace cable; replace DC electronics.

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

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What E8 means on a AEG washer

The E8 error code on an AEG washer indicates a fault within the motor control circuit. The tachogenerator, which is a small sensor attached to the motor that monitors rotational speed and sends feedback signals to the main control board, is the first component to suspect. If the tachogenerator develops a short circuit or open circuit, the control board loses the ability to regulate drum speed accurately and triggers E8. A defective motor with a winding short or open circuit will produce the same result, as will a motor that has become mechanically blocked and cannot rotate.

The signal path between the motor control board and the main board is also a documented cause. A damaged, corroded, or broken cable along this path interrupts communication and can mimic a sensor or motor failure entirely. Additionally, a failed MOS-FET transistor on the DC electronics board can prevent the motor from receiving proper drive signals, resulting in the same error. Because several different failure points share this single error code, systematic diagnosis is necessary to avoid unnecessary part replacements.

Diagnosis should begin with a visual inspection of the motor wiring harness for damage or loose connectors, followed by checking for any physical obstruction blocking drum rotation. If no blockage is found, testing the tachogenerator and motor windings for continuity will help isolate the fault. If wiring and motor components test within spec, attention should shift to the motor control board and the MOS-FET transistors on the DC electronics assembly.

Source: manufacturer service documentation.

Common causes of E8

  1. 01

    Tachogenerator fault

    Part replacement

    The tachogenerator monitors motor speed and sends feedback to the control board. A short circuit or open circuit in this sensor is the most frequent trigger for E8 and can be confirmed by testing the component for continuity.

  2. 02

    Motor blockage

    Wiring / connection

    Foreign objects such as coins, buttons, or debris can jam the drum or motor, preventing rotation entirely. Manually turning the drum by hand with the machine unplugged will reveal whether a physical blockage is present.

  3. 03

    Motor winding failure

    Part replacement

    A short circuit or open circuit in the motor windings prevents the motor from operating correctly. Testing motor winding resistance with a multimeter will identify this fault.

  4. 04

    Defective motor-to-main-board cable

    Part replacement

    The cable running between the motor control board and the main board can suffer broken wires or corroded connectors, interrupting the motor control signal. A careful visual inspection and continuity test of this harness can confirm the fault.

  5. 05

    Failed MOS-FET transistor on DC electronics board

    Part replacement

    A burned or shorted MOS-FET transistor on the motor drive electronics board will prevent correct power delivery to the motor. This typically requires board-level inspection or replacement of the DC electronics assembly.

See the test procedure for each cause

Frequently asked questions about E8

What does E8 mean on a AEG washer?
E8 indicates a fault in the motor circuit or motor control system. The code covers several possible causes including a tachogenerator short or open circuit, a motor winding fault, a blocked motor, a defective cable between the motor board and the main board, or a failed MOS-FET transistor on the DC electronics board. The washer cannot determine drum speed reliably when any of these faults are present, so it halts operation and displays the code.
Can I fix an E8 error on my AEG washer myself?
Some causes of E8 are DIY-friendly. Checking for and clearing a drum blockage requires no tools beyond unplugging the machine and manually turning the drum. Inspecting the motor wiring harness for obvious damage or loose connectors is also straightforward. However, replacing the tachogenerator, motor, or DC electronics board involves working with high-voltage components and is best handled by a qualified technician if you are not comfortable with appliance repair.
Is it safe to keep using my AEG washer when E8 is showing?
No, you should not continue running the washer while E8 is active. The error indicates a motor or motor control fault, and operating the machine in this state could cause additional damage to the motor, control boards, or wiring. Unplug the machine and diagnose the fault before attempting to run another cycle.
How much does it cost to repair an E8 error on an AEG washer?
Repair costs vary depending on the faulty component. Clearing a mechanical blockage costs nothing beyond your time. A replacement tachogenerator or wiring harness typically falls in the range of $20 to $80 for parts. A new motor or DC electronics board can range from $100 to $300 or more for parts alone, with labor adding to the total if a technician is needed.
Will resetting my AEG washer clear the E8 error?
A reset may temporarily clear the error code display, but E8 will return as soon as the washer attempts to run a cycle if the underlying fault is still present. The tachogenerator, motor, wiring, or electronics board issue must be diagnosed and corrected to permanently resolve the error. Repeated resets without addressing the root cause can risk further damage to connected components.

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