What does code P0503 mean?

Vehicle Speed Sensor Intermittent/Erratic/High: The vehicle speed sensor signal is erratic or reading higher than expected.

P0503 is rated as medium severity. Schedule service — affects performance or emissions.

P0503

Vehicle Speed Sensor Intermittent/Erratic/High

Powertrain Code · Medium

What does P0503 mean?

The vehicle speed sensor signal is erratic or reading higher than expected.

System: Vehicle Speed

P0503 is a powertrain diagnostic trouble code indicating vehicle speed sensor intermittent/erratic/high. This code is classified as medium severity, which means: schedule service — affects performance or emissions.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.