P0562 on Cadillac
System Voltage Low
P0562 on Cadillac vehicles indicates system voltage low. Au7o has documented this code across 3 Cadillac models — most commonly on ELR, Escalade ESV, XT6. 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 Cadillac range from $50 to $1,800, 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 Cadillac by Model
Cadillac ELR(1 issue)
- 12V Auxiliary Battery Drain Preventing System Boot2014-2016
The 12V auxiliary battery is prone to parasitic drain, especially when the vehicle is left unplugged for extended periods. Unlike a conventional car, the ELR cannot start if the 12V battery is dead even if the main traction battery is fully charged. The vehicle's electronics draw from the 12V system even when off.
Cadillac Escalade ESV(1 issue)
- Intermittent No-Start, Battery Drain, and Control Module Sleep/Wake Electrical Faults2021-2025
A recurring complaint on 2021+ Escalade ESV models is a dead battery or no-start condition after sitting overnight or for a few days. Owners and technicians have linked these events to parasitic draw from modules that fail to go to sleep, telematics/infotainment wake-up behavior, and occasional battery or charging-system management faults. Some vehicles need repeated dealer visits because the drain is intermittent and difficult to capture.
Cadillac XT6(1 issue)
- Auto Start-Stop Harshness and Battery Issues2020-2025
The auto start-stop system engages and disengages harshly, causing the vehicle to shudder on restart. The AGM battery required for the system degrades quickly, and when it weakens, the start-stop system becomes erratic or disables itself. Many owners find the system intrusive.
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View P0562 across all makes →Frequently Asked Questions
What does P0562 mean on Cadillac?▼
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 Cadillac specifically, this code is documented across 3 models.
What causes P0562 on Cadillac vehicles?▼
Common causes on Cadillac: 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 Cadillac?▼
Repair costs on Cadillac range from $50 to $1,800, depending on the specific model and root cause.
Which Cadillac models have P0562 documented?▼
Au7o has documented P0562 on 3 Cadillac models: ELR, Escalade ESV, XT6.