It’s normal to hear a clicking noise as your dishwasher goes through a cycle. The clicking sound is either coming from the electronic control panel or from the timer. This is not a malfunction.
If the sound is rhythmic, the cause may be an item inside the dishwasher tub. If you suspect this to be the case, stop the appliance and drain the water inside to remove the object.
If your appliance isn’t operating normally while making this noise, contact an authorised service agent.