A digital speedometer constantly reads zero mph. Technician A says the problem may be the vehicle speed sensor. Technician B says the problem may be the throttle position sensor. Who is correct

Technician A

Explanation:

The vehicle speed sensor is located at the right side of the transmission near the output shaft, it is also known as the output speed sensor. it is what tells your vehicle control unit how fast it is going. The vehicle speedometer and odometer rely on the information from this sensor.

With a faulty speed sensor, you might not be able to know how fast your car is going.