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What are the reasons for the power steering fault indicator light to illuminate?

2 Answers

LilyLynn

08/29/25 6:49am

The reasons for the power steering fault indicator light to illuminate are: 1. There is a large amount of air in the power steering system; 2. Foreign objects in the steering hydraulic line causing the steering pump flow control valve to stick; 3. Loose connections in the power steering system leading to steering fluid leakage; 4. Excessive wear of the steering gear piston cylinder, poor sealing of the oil seal, or control valve sticking or damage. The classifications of power steering systems include mechanical hydraulic power steering, electro-hydraulic power steering, and electric power steering. The principle of mechanical hydraulic power steering is to convert a portion of the engine's power output into hydraulic pump pressure, applying auxiliary force to the steering system to turn the tires.

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BrodyFitz

09/11/25 4:26am

As a seasoned driver with years of experience, I must warn you to be cautious when the power steering warning light comes on. The system might have issues, and the steering sensor is a common culprit—it detects the steering wheel's turning force and sends signals to the computer. A faulty power steering motor can also trigger the light, as it provides the assisting force and is prone to wear. A malfunctioning control module is even more serious, potentially causing the entire system to fail. Wiring problems are also frequent, including aging wires, loose connections, or short circuits. Low battery voltage is another concern because power steering requires stable electricity, and the system will alert you if it drops below 12 volts. Software bugs may also be to blame, requiring a diagnostic tool to scan. Don’t underestimate it—once the light is on, the steering wheel becomes heavier, making turns difficult and dangerous. I recommend visiting a professional repair shop immediately, but first, check the battery and fuses yourself. Regular maintenance of the motor and sensor can prevent most issues and extend your car’s lifespan. Safety comes first—don’t delay addressing the problem.

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