OBD-II Diagnostic Trouble Code
C0021
Brake Booster-general Signal Failure
C
Chassis
brakes / steering
brakes / steering
0
Generic
SAE standard
SAE standard
0
Chassis subsystem
21
Brake Booster-general Signal Failure
Severity · general guide
High
Brakes/steering — inspect soon
Code type
Generic
System
Chassis