AEG washing machine shows E43 and will not start, often related to door lock control

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Shorted door lock coil, Faulty triac on main control board, Wiring short between board and lock, Moisture damage on control PCB

Safety first: Unplug the washer before any electrical testing.

Inspect door lock and wiring: Remove the door seal band, access the lock, and check for burnt smell or discoloration. Inspect the harness for damage.
Test lock coil: Measure resistance across the lock coil. A short or open reading indicates a faulty lock that must be replaced.

If a new lock does not clear E43, the main control board is likely damaged and should be replaced or repaired by a professional.

Professional Required 5/5

AEG Main Control Board (ECU)

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