P0562 on Mazda
System Voltage Low
P0562 on Mazda vehicles indicates system voltage low. Au7o has documented this code across 4 Mazda models — most commonly on CX-60, Mazda6, MPV. 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 Mazda range from $200 to $700, 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 Mazda by Model
Mazda CX-60(2 issues)
- 12V battery drains / goes flat when parked2022-2024
The CX-60 has no conventional alternator; its small 12V battery (around 6.5Ah) is charged from the 48V mild-hybrid system via a DC/DC converter. Faulty Electrical Supply Unit (ESU) control software, or pressing the start button multiple times before the driver-personalisation system has recognised the driver, can prevent the car's systems from going to sleep, draining the battery within 4-8 hours of parking. Owners report needing to recharge or jump-start regularly.
- 2022-Early 2023 CX-60 12V Battery Drain from BCM Power-Saving Software2022-2023
Mazda's Japanese April 2023 service campaign covers specified early CX-60 chassis. On vehicles equipped with Driver Personalisation, rapidly repeating push-button-start operation can expose an incorrect body-control-module program: after power-off, the vehicle may fail to enter its low-power state and continued current draw can discharge the 12V battery. This is one verified cause for the early-production campaign population, not proof that every low-battery warning or flat CX-60 battery has the same cause.
Mazda Mazda6(1 issue)
- Alternator Premature Failure and Charging System Issues2003-2008
First-generation Mazda6 models (especially with the 2.3L and 3.0L engines) experience premature alternator failure, often between 60,000-100,000 miles. The internal voltage regulator and rectifier diodes fail, causing undercharging or overcharging. Symptoms include dimming lights, battery warning light, and eventually a dead battery. The 3.0L V6 alternator is particularly prone due to its location near exhaust heat.
Mazda MPV(1 issue)
- Alternator Premature Failure1990-2006
Alternator fails prematurely due to heat exposure from exhaust proximity. Battery drains and warning lights come on. Can strand vehicle if battery goes flat.
Mazda Protege(1 issue)
- Alternator Premature Failure and Charging Issues1995-2003
Proteges experience premature alternator failure, often between 80,000-120,000 miles. The voltage regulator and brush assembly wear out, causing undercharging (battery dies) or overcharging (bulbs blow, battery boils). The alternator is mounted low on the engine where it is exposed to heat and road spray. Remanufactured units often have short lifespans as well.
Looking for P0562 on a different make?
View P0562 across all makes →Frequently Asked Questions
What does P0562 mean on Mazda?▼
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 Mazda specifically, this code is documented across 4 models.
What causes P0562 on Mazda vehicles?▼
Common causes on Mazda: 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 Mazda?▼
Repair costs on Mazda range from $200 to $700, depending on the specific model and root cause.
Which Mazda models have P0562 documented?▼
Au7o has documented P0562 on 4 Mazda models: CX-60, Mazda6, MPV, Protege.