OBD-IICharging System
Charging System Fault Codes
Alternator, battery, and charging circuit fault codes.
No codes indexed yet for this category. Use the AI diagnostic engine to get guided diagnosis for any charging system fault.
Start DiagnosisDiagnostic Approach — Charging System
- 1
Test battery voltage — should be 12.4–12.7V at rest.
- 2
Test charging voltage at battery with engine running — should be 13.5–14.7V.
- 3
Check alternator output with load test.
- 4
Inspect serpentine belt and tensioner.
- 5
Check battery terminals for corrosion.
AI-Guided Charging System Diagnosis
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