What are the reasons for the power steering warning light to illuminate in the Buick Excelle?

[SanSophie]

There are many reasons that can cause the electronic power steering warning light to illuminate, often accompanied by symptoms such as heavy steering, abnormal steering noise, steering wheel vibration, and poor steering wheel return ability. The specific causes are as follows: 1. Heavy steering fault reasons: The power steering system contains a large amount of air, leading to abnormal car steering. Foreign objects in the steering hydraulic lines cause the steering pump flow control valve to stick. Loose connections in the power steering system result in steering fluid leakage. Excessive wear of the steering gear piston cylinder, poor oil seal sealing, or control valve sticking or damage. 2. Abnormal steering noise fault reasons: Overloading of the steering system causes excessive wear of the stator and rotor inside the steering pump, resulting in irregular oil movement and abnormal noise. Loose installation of the steering gear or steering pump on the bracket, internal wear of the steering gear, and improper adjustment of gears and racks.