P0562 on Volkswagen
System Voltage Low
P0562 on Volkswagen vehicles indicates system voltage low. Au7o has documented this code across 1 Volkswagen model — most commonly on ID.4. 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.
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 Volkswagen by Model
Volkswagen ID.4(2 issues)
- 12V Auxiliary Battery Drain and Dead Battery2021-2025
The ID.4 suffers from 12V auxiliary battery drain, leaving the vehicle unable to start despite having a fully charged high-voltage battery. The 12V battery powers the vehicle's computers, door locks, and startup systems. Parasitic drain from always-on modules (telematics, battery management) depletes the small 12V battery, especially if the vehicle sits for more than a few days. VW issued a software update to improve 12V battery charging management, but the issue persists for many owners.
- Onboard Charger (OCDC) Condensation Failure Stopping 12V Charging2024
Condensation can form inside the Onboard Charger with integrated DC/DC converter (OCDC, a Bosch-supplied unit) because the printed circuit board lacks sufficient protective conformal coating. Moisture causes electromigration on the PCB and the OCDC fails, so it can no longer charge the 12-volt battery from the high-voltage pack. The result is non-start conditions, and if driven until the 12V battery depletes, a loss of motive power and electronically assisted functions. This is a hardware charger failure, separate from ordinary 12V auxiliary battery drain. NHTSA recall 25V125 covers MY2024 ID.4 (and related Audi Q4 e-tron).
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View P0562 across all makes →Frequently Asked Questions
What does P0562 mean on Volkswagen?▼
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 Volkswagen specifically, this code is documented across 1 model.
What causes P0562 on Volkswagen vehicles?▼
Common causes on Volkswagen: 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 Volkswagen?▼
Repair costs vary widely depending on the root cause and specific Volkswagen model.
Which Volkswagen models have P0562 documented?▼
Au7o has documented P0562 on 1 Volkswagen model: ID.4.