Engine and gearbox (P)
P0562: System voltage low
The control module has detected that the supply voltage is below the normal operating range. This can affect the performance of various electrical systems in the car.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Dim headlights
- Slow engine cranking
- Electrical accessories not working
- Warning lights on dashboard
Common causes
- Weak battery
- Faulty alternator
- High resistance in connections
- Corroded battery terminals
How to check it yourself
- Check battery voltage
- Inspect battery terminals for corrosion
- Test alternator output
- Examine ground connections
Can I keep driving?
The car can be driven, but electrical systems may not function properly. Address the issue soon to avoid being stranded.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer