The control module detected an out-of-range system (battery) voltage.
SYMPTOMS
- Check-engine light
- Erratic electrical behavior
- Possible no-start
LIKELY CAUSES
- Weak battery
- Failing alternator
- Corroded or loose grounds/terminals
- Wiring fault
DIAGNOSIS STEPS
- Test battery and charging system
- Check terminals and grounds
- Inspect main power wiring
RELATED PARTS
- Battery
- Alternator