what does p/s mean on a car

[CassidyFitz]

P/S on a car's dashboard stands for Power Steering. This indicator light is specifically related to your vehicle's power steering system. When this light illuminates, it signals a potential problem that needs attention. A modern car's power steering is often an Electric Power Steering (EPS) system, which uses an electric motor to assist steering instead of older hydraulic systems.

When the P/S light comes on, you will typically notice the steering wheel becomes significantly heavier and harder to turn, especially at low speeds or when parking. While the car is still drivable, it requires much more physical effort to steer. You should drive with extra caution and have the system diagnosed by a professional as soon as possible.

Common reasons for the P/S warning light to activate include a failing EPS motor, issues with a steering angle sensor, a software glitch, or a problem with the vehicle's electrical system providing power to the EPS unit. Ignoring this warning can lead to a complete loss of power steering assistance and potentially damage other components.

Potential Cause	Symptom	Typical Urgency
Failing EPS Motor	Gradual or sudden increase in steering effort, possible whining noise.	High - Requires prompt repair.
Faulty Sensor	Erratic steering assistance, light may flicker.	Medium - Diagnosis needed.
Software Glitch	Light on with normal steering feel; may reset after restarting the car.	Low - May require a dealer reset.
Low System Voltage	Light comes on with other electrical issues; check battery/alternator.	Medium - Address electrical fault.

The first step is to try a simple reset by turning the car off and on again. If the light remains, reduce your speed, avoid sharp maneuvers, and schedule a service appointment. The repair complexity can range from a simple sensor replacement to a more involved EPS motor repair.

[OLucas]

Think of it as your car's way of saying the power steering is having a hiccup. You'll feel it immediately—the steering wheel gets really heavy, like you're trying to turn the wheels manually. It's not a "pull over right now" emergency, but you should take it easy. Get it checked out soon because driving without that power assist is a workout, especially in parking lots.

[JosephRose]

That's your power steering warning light. Most cars today have electric power steering (EPS). When that light comes on, it means the computer has detected a fault in the system. The immediate effect is that you lose the electric motor's assistance. It's definitely a sign you should plan a visit to your mechanic. Continuing to drive with the light on won't strand you, but it puts unnecessary strain on the system.

[SanAubrey]

From an engineering perspective, P/S indicates a fault in the Electric Power Steering control module. This system relies on sensors and a motor to provide assistance. The illumination of the P/S light means a parameter—like torque input, vehicle speed, or motor current—is outside its expected range. This triggers a "fail-safe" mode, defaulting to manual steering. Diagnosis typically requires scanning for specific diagnostic trouble codes (DTCs) to pinpoint the exact faulty component.