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P0563 — System Voltage High

System voltage exceeded maximum expected level, typically above 16 volts. Overcharging can damage electronics.

Severity: MediumRepair: $100-$500Difficulty: Easy

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Common symptoms of P0563

Common causes of P0563

Repair cost & difficulty

Typical cost to fix P0563: $100-$500 · Difficulty: Easy

Pro tip: Overcharging can boil battery and damage every module. Charging voltage should be 13.5-14.5V. Over 15V = alternator replacement.

Vehicles commonly affected

All makes

Related trouble codes

P0562

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.