P0562 on Subaru
System Voltage Low
P0562 on Subaru vehicles indicates system voltage low. Au7o has documented this code across 3 Subaru models — most commonly on Legacy, Solterra, WRX. 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 Subaru range from $250 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 Subaru by Model
Subaru Legacy(1 issue)
- Battery Drain and No-Start from DCM/Telematics Module Staying Awake2021-2024
A well-documented issue on late-model Subaru vehicles including the Legacy involves parasitic battery drain tied to the Data Communication Module (DCM), telematics hardware, or related control modules not going to sleep properly. Owners report dead batteries after the vehicle sits overnight or for a few days, repeated jump-starts, and battery replacements that do not permanently solve the problem. This issue is reflected in Subaru service communications, owner forum threads, and NHTSA complaints.
Subaru Solterra(1 issue)
- 12V Auxiliary Battery Drain - Vehicle Won't Power On2023-2025
Despite being an EV with a large high-voltage battery, the Solterra relies on a small 12V auxiliary battery to power control modules and enable the vehicle to 'start.' This 12V battery drains quickly when the vehicle sits for more than 5-7 days, or when various modules fail to enter sleep mode properly. A dead 12V battery means the vehicle cannot be powered on, doors may not unlock, and the charging port won't open - even with a fully charged main battery. Multiple software updates have attempted to address module sleep behavior.
Subaru WRX(1 issue)
- Battery Drain / No-Start After Sitting Due to Low Quiescent Voltage2022-2025
A recurring owner complaint on late-model Subarus including the VB WRX is premature battery discharge, leading to slow cranking or a no-start condition after the car sits for a short period. Owners often report the vehicle tests fine after a jump but repeatedly goes dead, especially in cold weather or with short-trip use. The issue appears tied to battery reserve capacity, charging profile, and occasional parasitic draw concerns rather than a single universal failed component.
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What does P0562 mean on Subaru?▼
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 Subaru specifically, this code is documented across 3 models.
What causes P0562 on Subaru vehicles?▼
Common causes on Subaru: 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 Subaru?▼
Repair costs on Subaru range from $250 to $1,200, depending on the specific model and root cause.
Which Subaru models have P0562 documented?▼
Au7o has documented P0562 on 3 Subaru models: Legacy, Solterra, WRX.