Dishwasher working ok but repetitive clicking sound during wash

This problem started a week ago. There has been no change in washing performance but now we have a clicking sound coming from the bottom of the machine. It sounds like a solenoid clicking, one click roughly every second. It doesn’t do it on the first part of the wash cycle. Doesn’t seem to be a water pump issue, during parts of the cycle the pump is running with no problem and no clicking. It is definitely coming from the right side on the bottom, which is where the pump and diverter are.