* Low power steering fluid. Power steering fluid helps to lubricate the steering system and make it easier to turn the steering wheel. If the fluid level is low, it can cause the steering system to make a noise when turning. Check the power steering fluid level and add fluid if necessary.
* Worn steering rack. The steering rack is a component of the steering system that helps to turn the wheels. If the steering rack is worn, it can cause the steering system to make a noise when turning. A worn steering rack will need to be replaced.
* Worn tie rod ends. The tie rod ends are components of the steering system that connect the steering rack to the wheels. If the tie rod ends are worn, it can cause the steering system to make a noise when turning. Worn tie rod ends will need to be replaced.
* Worn ball joints. The ball joints are components of the suspension system that allow the wheels to move up and down. If the ball joints are worn, it can cause the steering system to make a noise when turning. Worn ball joints will need to be replaced.
If you are not sure what is causing the steering noise, it is best to have the vehicle inspected by a qualified mechanic.
