P0562 on Lexus
System Voltage Low
P0562 on Lexus vehicles indicates system voltage low. Au7o has documented this code across 1 Lexus model — most commonly on IS. 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 Lexus range from $350 to $900, 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 Lexus by Model
Lexus IS(1 issue)
- Alternator Failure from Age and Oil Contamination Leading to Charging Loss2001-2005
First-generation IS300s commonly experience alternator failure as mileage climbs, sometimes accelerated by nearby oil leaks contaminating the unit. Owners report battery warning lights, dimming lights, low system voltage, and stalling after the battery discharges. Because the car may continue running briefly on battery power, the problem is sometimes mistaken for a bad battery alone.
Looking for P0562 on a different make?
View P0562 across all makes →Frequently Asked Questions
What does P0562 mean on Lexus?▼
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 Lexus specifically, this code is documented across 1 model.
What causes P0562 on Lexus vehicles?▼
Common causes on Lexus: 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 Lexus?▼
Repair costs on Lexus range from $350 to $900, depending on the specific model and root cause.
Which Lexus models have P0562 documented?▼
Au7o has documented P0562 on 1 Lexus model: IS.