P0562 on Audi
System Voltage Low
P0562 on Audi vehicles indicates system voltage low. Au7o has documented this code across 2 Audi models — most commonly on A4, Q8 e-tron. P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. Typical repair costs on Audi range from $150 to $1,200, depending on the specific model and root cause.
Common Causes of P0562
- •Failing alternator or worn alternator brushes/regulator
- •Weak, old, or discharged battery
- •Corroded, loose, or damaged battery cables and terminals
- •Bad engine or chassis ground connections
- •Slipping, glazed, or broken serpentine/drive belt
- •High resistance in charging system wiring or fusible link
- •Faulty PCM voltage reference or charging-system control
P0562 on Audi by Model
Audi A4(1 issue)
- 12V Battery Drain and No-Start from Faulty Gateway/Telematics Sleep Behavior2022-2025
Multiple late-model Audi/VW MQB-derivative vehicles, including B9.5 A4s, have owner reports of repeated low-voltage warnings, dead batteries after sitting, and intermittent no-start conditions. The pattern is commonly linked to control modules not entering sleep mode properly, telematics/connectivity functions waking the network, or a weak AGM battery that tests marginal but repeatedly discharges. Owners typically report the car needing jump-starts after short parking periods and warning messages about electrical system malfunction or battery charge.
Audi Q8 e-tron(2 issues)
- 12V Auxiliary Battery Parasitic Drain2024-2026
The Q8 e-tron can experience excessive 12V auxiliary battery drain when parked for extended periods. Despite having a large HV battery, the 12V system powers control modules, security systems, and connectivity features that remain active. A software bug can prevent modules from entering sleep mode, draining the 12V battery in 3-5 days of sitting. This leaves the vehicle unable to be unlocked or started.
- 12V Auxiliary Battery Excessive Drain2023-2025
The 12V auxiliary battery drains if the vehicle sits for more than a few days. Multiple electronic modules fail to enter proper sleep mode, causing parasitic drain exceeding 50mA. Software-related in most cases.
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View P0562 across all makes →Frequently Asked Questions
What does P0562 mean on Audi?▼
P0562 stands for "System Voltage Low." P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. On Audi specifically, this code is documented across 2 models.
What causes P0562 on Audi vehicles?▼
Common causes on Audi: Failing alternator or worn alternator brushes/regulator, Weak, old, or discharged battery, Corroded, loose, or damaged battery cables and terminals, Bad engine or chassis ground connections, Slipping, glazed, or broken serpentine/drive belt. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0562 on a Audi?▼
Repair costs on Audi range from $150 to $1,200, depending on the specific model and root cause.
Which Audi models have P0562 documented?▼
Au7o has documented P0562 on 2 Audi models: A4, Q8 e-tron.