What is the fault when the ABS light comes on while driving?

[VonNova]

When the ABS light comes on in a car, it indicates that the anti-lock braking system may have a malfunction. Relevant information is as follows: 1. Principle: The ABS anti-lock braking system uses sensors installed on the wheels to send signals when the wheels are about to lock up. The controller then instructs the regulator to reduce the hydraulic pressure in the wheel's brake cylinder, decreasing the braking torque. After a certain period, the original hydraulic pressure is restored. This cycle repeats continuously (up to 5~10 times per second), keeping the wheels in a rotating state while providing maximum braking torque. 2. ABS: In cars without ABS, if the brake pedal is pressed hard while driving, the wheel speed will rapidly decrease. When the braking force exceeds the friction between the wheels and the ground, the wheels will lock up. Fully locked wheels reduce the friction between the tires and the ground. If the front wheels lock up, the driver cannot control the vehicle's direction. If the rear wheels lock up, it is very easy for the vehicle to skid sideways.