OBD-II Diagnostic Trouble Code
P2503
Charging System Voltage Low
P
Powertrain
engine / trans
engine / trans
2
Generic
SAE standard
SAE standard
5
Speed / idle / inputs
03
Charging System Voltage Low
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain
Standard
ISO/SAE Controlled
Fault type
General