Dishwasher making noise?

A worn pump bearing or debris in the impeller causes grinding or humming.

Likely causes · most likely first

Circulation Pump

Hard DIY Part: $80–$160
Drain Pump

Moderate DIY Part: $40–$80

A failing drain pump often produces a loud buzzing or grinding sound.
Lower Spray Arm

Easy DIY Part: $15–$40

A cracked or unbalanced spray arm rattles as it spins.
Diverter Disc

Hard DIY Part: $20–$45

A worn diverter disc clicks or rattles as it switches water routing.

See the faulty part in 3D.

Tap a highlighted part to see exactly why it fails, how to verify it's the problem, and how to replace it.