Check the fluid in the Power Steering. If it is low the car will make noise when you turn the wheel.
ummm power steering
It could be low fluid in the power steering pump.
An expert would have to hear the noise. Some possibilities are dry top bearing of the shocks, horn ring loose in steering wheel, tire rubbing on frame - -
Check your power steering fluid
If you mean "what" is making noise when you turn the steering wheel? It usaually means you need power steering fluid. If you run too long without power steering fluid it will make your power steering go out. If it is making a shuttering noise when you take sharp turns. Your rear differential may need to be serviced. I would have is burnished.
Power Steering Fluid Or Power Steering Pump
Check your steering pump to see if you need to add more power steering fluid.
That would be the nut that holds the steering wheel to the steering shaft.
it would be in need of some lubrication Perhaps bad or weak clock-spring (real part) inside steering column
A steering wheel would steer a boat, and a captain would be controlling the steering wheel.