OBD-II Diagnostic Trouble Code
P0503
Vehicle Speed Sensor "A" Intermittent/Erratic/High
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
5
Speed / idle / inputs
03
Vehicle Speed Sensor "A" Intermittent/Erratic/High
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain
Standard
SAE J2012
Fault type
Intermittent