What can a low power steering fluid level lead to?

A low power steering fluid level can lead to a stiff steering wheel because the power steering system relies on adequate fluid levels to create hydraulic pressure necessary for steering assistance. When the fluid is low, the pump may struggle to provide enough pressure, making it difficult to turn the steering wheel, particularly at low speeds or during maneuvers that require more effort. This results in a noticeable increase in steering effort needed and leads to the sensation of a stiff or hard-to-turn steering wheel.

Other scenarios related to power steering fluid levels could also have indirect effects on vehicle handling or performance, but the immediate and direct consequence of low fluid is the loss of steering assist, making the steering feel stiff.