Generator System Performance
A general performance fault in the alternator system - charging output too low or too high under normal load conditions, often caused by a worn brush, a failing regulator, or harness resistance.
Affected components
- Alternator
- Alternator regulator
Common causes
- High likelihood: Brushes worn
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.