OBD-II Diagnostic Trouble Code
P0504
Brake Switch A/b Correlation
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
5
Speed / idle / inputs
04
Brake Switch A/b Correlation
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain