P0563Medium urgency

System Voltage High

Electrical · Charging System

⚠️ Fix soon — overcharging damages battery and electronics.

What this means

The electrical system voltage is above the maximum threshold. An overcharging alternator can boil the battery, damage sensitive electronics, and cause light bulbs to burn out prematurely.

Likely causes

Faulty alternator voltage regulatorMost common
Failed alternatorMost common
Faulty ECMLess common

Estimated repair cost

Alternator replacement$300 – $800

Voltage regulator replacement$50 – $200

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Frequently asked questions

What does P0563 mean?

The electrical system voltage is above the maximum threshold. An overcharging alternator can boil the battery, damage sensitive electronics, and cause light bulbs to burn out prematurely.

Is P0563 serious?

Fix soon — overcharging damages battery and electronics.

How much does it cost to fix P0563?

Repair costs for P0563 range from $300 – $800 depending on the root cause and your vehicle.

Can I drive with P0563?

You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.