What is the reason for the ABS light coming on after a vehicle annual inspection?

[VonTravis]

The reason for the ABS light coming on after a vehicle annual inspection is: During the braking test phase, the brake test bench drives either the front or rear wheels to rotate, and the operator applies the brakes inside to measure the braking force. The ABS computer only receives speed signals from either the front or rear wheels, causing the computer to detect a fault, which then triggers the ABS light to illuminate. The solution is to turn off the engine and restart it, or drive a few kilometers, after which the ABS light will turn off by itself. ABS stands for Anti-lock Braking System, and its function is to automatically control the braking force during vehicle braking, preventing the wheels from locking up and maintaining a state of rolling and sliding, ensuring maximum traction between the wheels and the ground. ABS only activates when the vehicle requires emergency braking, effectively reducing braking distance and preventing skidding during sudden braking.