My car speedometer is stuck on 20 MPH?

Question

My car's speedometer is stuck on the 20 MPH mark and will not drop back down to zero?

What would cause my car's speedometer to stay stuck on 20 MPH and not return the zero when the car stops?

Answer 1

What kind of car do you have? It makes a difference.

Is it a car with a digital speedometer or a car with an analog cable driven speedometer with a needle?

If it's a digital speedometer it could be a bad connection to your transmission or could be something in the cars computer causing the mph to be stuck.

If it's cable driven needle speedometer then it could be the speedometer cable coming loose in the transmission or could also be the speedometer on the dash itself.