P0563 on Ford: How to Diagnose & Fix
System Voltage High
1 Ford model · 1 documented issue · $400-$1,000 repair
P0563 on Ford by model: symptoms, diagnosis and fix
Ford Transit vans experience premature alternator failure, often between 50,000-80,000 miles. Symptoms often start as intermittent battery warnings before progressing to a no-start condition.
Common Symptoms
- Battery warning light illuminated
- Dimming headlights or interior lights
- Electrical accessories cutting out intermittently
- Battery repeatedly dying overnight
- Voltage gauge reading below 13.5V or above 15V
How to Fix
Test the battery — a failing battery can cause alternator overwork and premature failure.
Sources for this issue (3)
P0563 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0563 mean on a Ford?
P0563 stands for "System Voltage High." This code indicates the engine computer detected that the vehicle's system (battery) voltage is higher than the normal operating range. The PCM monitors charging system voltage, and persistently high voltage usually points to an overcharging condition. Excessive voltage can damage the battery, sensitive electronics, and lighting if left unaddressed. On Ford it is documented across 1 model: Transit.
What are the most common causes of P0563?
The most common causes of P0563 are: Faulty voltage regulator in the alternator, Overcharging alternator, Poor ground or wiring connection at the alternator/battery, Faulty battery, Corroded battery terminals, PCM or charging-control module fault. The specific cause varies by vehicle.
How much does it cost to fix P0563 on a Ford?
Published repair estimates on Ford range from $400 to $1,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0563 on a different make?
View P0563 across all makes →Join 700+ subscribers following Au7o for vehicle insights and updates.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.