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Error code reference

Mabe Washer Error Code F8

Lid lock failure

Mabe codesMabe washer codes

Lid lock failure - the board sent pulses to lock/unlock the lid but did not receive the expected lock signal from terminal 5 after multiple attempts.

First step from the service manual

Check lid lock mechanism, solenoid, cam, locking pin, and wiring between lid lock terminals and control board.

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

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What F8 means on a Mabe washer

The F8 error code on a Mabe washer indicates a lid lock failure. Specifically, the control board sent repeated electrical pulses to the lid lock assembly in an attempt to engage or disengage the locking mechanism, but it never received the expected confirmation signal back through terminal 5. This feedback signal is how the board verifies that the lid has physically locked or unlocked. When the board cycles through multiple attempts and still gets no valid response, it throws the F8 code and halts operation to prevent the machine from running with an unsecured lid.

The lid lock system involves several interconnected components: the solenoid that drives the lock actuator, the cam that translates solenoid movement into mechanical locking action, the locking pin that physically secures the lid, and the wiring harness that carries both the command pulses and the feedback signal between the lid lock assembly and the control board. A failure in any one of these parts can break the circuit and prevent the board from receiving the expected confirmation at terminal 5.

Common causes include a mechanically jammed or worn cam or locking pin that prevents the solenoid from completing its travel, a burned-out or open-circuit solenoid coil, broken or corroded wiring connections along the harness between the lid lock and the board, or in some cases a failed control board that cannot correctly send or interpret the lock signals. Diagnosis should start with a visual inspection of the lock mechanism for physical obstructions or wear, followed by continuity and resistance checks on the solenoid and wiring.

Source: manufacturer service documentation.

Common causes of F8

  1. 01

    Faulty lid lock solenoid

    Part replacement

    The solenoid coil inside the lid lock assembly may be open-circuit or burned out, preventing it from actuating the locking pin. Check solenoid continuity with a multimeter; a lack of continuity confirms the solenoid has failed.

  2. 02

    Broken or corroded wiring harness

    Wiring / connection

    The wiring between the lid lock terminals and the control board, especially the feedback wire connected to terminal 5, can develop breaks, loose connectors, or corrosion that interrupts the signal. Inspect the harness for damaged insulation, pushed-back terminals, or oxidized connector pins.

  3. 03

    Worn or jammed cam or locking pin

    Part replacement

    The cam that converts solenoid movement into mechanical locking action can wear down or become obstructed, leaving the locking pin unable to complete its travel. Inspect these parts for visible wear, deformation, or debris blocking movement.

  4. 04

    Lid strike or latch misalignment

    Part replacement

    If the lid strike, the plastic or metal tab on the lid that engages the lock, is bent, broken, or out of alignment, the lock mechanism cannot complete its engagement and the board never sees the expected confirmation. Check that the lid closes squarely and the strike enters the lock housing properly.

  5. 05

    Failed control board

    Part replacement

    If the lid lock assembly and wiring both test correctly, the control board itself may be unable to send proper actuation pulses or read the return signal from terminal 5. This is the least common cause and should only be considered after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about F8

What does F8 mean on a Mabe washer?
F8 on a Mabe washer means the lid lock system has failed. The control board sent multiple pulses to the lid lock assembly to engage or disengage the lock, but never received the expected confirmation signal back through terminal 5. The washer will not operate until the lid lock issue is resolved, as this is a built-in safety feature.
Can I fix the F8 error myself?
Some causes of F8 are DIY-accessible, such as inspecting and cleaning corroded wiring connectors or checking for obvious physical obstructions in the lid lock mechanism. If the solenoid, cam, locking pin, or wiring harness needs replacement, a technically confident DIYer can handle the repair with basic tools. If the control board is at fault, that repair is more involved and may warrant professional service.
Is it safe to use my Mabe washer while it shows F8?
No, you should not attempt to bypass or run the washer while F8 is active. The lid lock is a safety system designed to prevent the drum from spinning with an unsecured lid. Operating the washer without a functioning lid lock creates a risk of injury from a spinning drum or water spillage.
Will resetting the washer clear the F8 error code?
A reset may temporarily clear the F8 code, but the error will return as soon as the washer attempts to lock the lid again and fails. The underlying mechanical or electrical fault must be diagnosed and repaired for the code to clear permanently. Repeatedly resetting without addressing the root cause will not fix the problem.
How much does it cost to repair an F8 lid lock error on a Mabe washer?
Repair costs vary depending on what component has failed. A replacement lid lock assembly typically runs in the range of $30 to $80 for parts. If a wiring repair is all that is needed, costs can be lower. A control board replacement is the most expensive scenario, often ranging from $100 to $250 or more for parts alone, with additional labor costs if a technician is hired.

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