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P0563: System Voltage High
Severity: Medium Drive gently and get it diagnosed soon.
What does P0563 mean?
The engine computer sees system voltage above normal, usually an overcharging alternator.
Generic OBD-II definition: System Voltage High. Confirm applicability in your vehicle service information.
Common causes
- Faulty voltage regulator/alternator
- Wiring problem
Symptoms
- Bulbs burning out
- Battery overheating or smell
Can I keep driving with P0563?
Severity: Medium Drive gently and get it diagnosed soon.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Test charging voltage
- Replace alternator/regulator if overcharging