LG Washer Error Code AE3

AE3 indicates a communication error between the DR Module and the main PBA (Printed Board Assembly). The washer is detecting that signals between these two control components are not being received. This is most commonly caused by a loose connector, an incorrectly seated plug, or a faulty solder joint on one of the boards.

No, you should not continue running the washer while AE3 is active. The error indicates that critical control communication between internal components has failed, meaning the washer cannot properly manage its operation. Running it in this state could result in unexpected behavior or further damage to the control system.

If the fix is simply reseating a loose connector, there may be no parts cost at all, though a service call from a technician typically runs in the range of $75 to $150. If a wiring harness needs replacement, parts and labor combined could range from $100 to $250. If the DR Module or main PBA requires replacement, total repair costs can range from $200 to $450 or more depending on parts pricing and labor rates in your area.

Start by unplugging the washer and then inspecting all connector connections between the DR Module and the main PBA for loose, unseated, or incorrectly routed plugs. Reseat any connectors that are not firmly locked in place. If connectors appear secure, check the wiring harness for damage and inspect solder joints on both boards for cracks or separation. If the fault persists after these checks, one of the boards may need to be replaced.

A power reset by unplugging the washer for a few minutes may temporarily clear the code, but if the underlying connection or component issue is not resolved, the AE3 error will return. A reset is useful for confirming whether a minor communication glitch occurred, but a persistent AE3 code requires physical inspection of the connectors, wiring harness, and solder joints.