AEG washing machine makes very loud rumbling or roaring noise during spin, even when empty, no error code

Safety first: Unplug the washer. Spinning with failed bearings can cause catastrophic damage.

• Check for play: With the door open, grasp the stainless drum at the top and bottom and try to lift and push it. Excessive movement or a clunking sound indicates bearing wear.
• Spin by hand: Rotate the drum manually. A rough, grinding, or rumbling feel confirms bearing issues.

On most AEG models, bearing replacement requires stripping the tub assembly and often replacing the complete rear half of the tub or a bearing kit. This is a complex repair best done by an experienced technician.