What does the 'SD' error code mean on my washing machine display?

The 'SD' error code indicates that excessive suds have been detected and a suds routine has automatically started. This routine removes extra suds and ensures proper rinsing of your garments. The 'SD' message displays during rinsing and at the end of the cycle to inform you that the suds routine was activated. Use only HE (High Efficiency) detergents to prevent this issue.