P0563 on Infiniti
System Voltage High
P0563 on Infiniti vehicles indicates system voltage high. Au7o has documented this code across 1 Infiniti model — most commonly on QX55. 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. Typical repair costs on Infiniti range from $200 to $600, depending on the specific model and root cause.
Common Causes of P0563
- •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
P0563 on Infiniti by Model
Infiniti QX55(1 issue)
- Premature 12V Battery Failure / Parasitic Drain (No-Start, Warning Cascade)2022-2023
The 2022 QX55 debut year drew numerous complaints of the 12V battery failing to hold a charge or discharging prematurely, leaving the vehicle with a no-crank/no-start condition, key-detection errors and a cascade of dashboard warning messages at startup. In one reported case a battery-related electrical failure led to a sudden loss of power steering assist, a serious safety concern. Parasitic draw from the vehicle's electronics and short-trip driving accelerate the problem.
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View P0563 across all makes →Frequently Asked Questions
What does P0563 mean on Infiniti?▼
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 Infiniti specifically, this code is documented across 1 model.
What causes P0563 on Infiniti vehicles?▼
Common causes on Infiniti: Faulty voltage regulator in the alternator, Overcharging alternator, Poor ground or wiring connection at the alternator/battery, Faulty battery, Corroded battery terminals. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0563 on a Infiniti?▼
Repair costs on Infiniti range from $200 to $600, depending on the specific model and root cause.
Which Infiniti models have P0563 documented?▼
Au7o has documented P0563 on 1 Infiniti model: QX55.