What is speedo meter sensor?

A speedometer sensor, often referred to as a vehicle speed sensor (VSS), is a device that measures the speed of a vehicle and relays that information to the speedometer and the vehicle's onboard computer systems. It typically operates by using magnetic or optical methods to detect the rotation of the wheels or transmission components. This data is crucial for various functions, including speed display, odometer readings, and adjustments to engine performance for fuel efficiency and safety. A malfunctioning speedometer sensor can lead to inaccurate speed readings and affect other vehicle systems.