Black or gray marks on dishes, or darkened plastics, after washing

Gray streaks on dishes are almost always metal marking: aluminum utensils, pans or throwaway foil trays rubbing against dishes, which leave a gray line much like a pencil mark. Darkened plastics can come from real silver items in the load. Loose black specks are a different case: food debris, a dirty filter, or rubber/insulation coming apart; check the filter and door parts.

Single source ~20 min easyBrands: All

Before you start

Turn off power before removing lower spray arm or filter assemblies on models that require tools

Diagnostic steps

Unlock all 4 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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