OBD-II Diagnostic Trouble Code
P0B04
Hybrid/EV Battery Voltage Isolation Fault
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
B
Hybrid propulsion
04
Hybrid/EV Battery Voltage Isolation Fault
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain