P0562 on Toyota
System Voltage Low
P0562 on Toyota vehicles indicates system voltage low. Au7o has documented this code across 1 Toyota model — most commonly on Highlander. 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 Toyota range from $350 to $950, 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 Toyota by Model
Toyota Highlander(1 issue)
- Charging System Malfunction / Alternator Failure (No-Start, Battery Not Charging)2014-2020
Owners report a 'Charging System Malfunction' warning and intermittent hard-start / no-start conditions traced to a failing alternator that no longer maintains battery voltage. A healthy unit should read ~13.5–14.8 V at the battery with the engine running; below ~13 V confirms a charging fault. Because the alternator solely charges the battery, a jump start is only a temporary band-aid and the vehicle strands again once the battery drains.
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What does P0562 mean on Toyota?▼
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 Toyota specifically, this code is documented across 1 model.
What causes P0562 on Toyota vehicles?▼
Common causes on Toyota: 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 Toyota?▼
Repair costs on Toyota range from $350 to $950, depending on the specific model and root cause.
Which Toyota models have P0562 documented?▼
Au7o has documented P0562 on 1 Toyota model: Highlander.