P0562 System Voltage Low

Powertrain Severity: Moderate Generic OBD-II

The engine computer sees low supply voltage.

Common causes

  • Weak battery
  • Failing alternator
  • Loose or corroded battery terminals
  • Poor ground connection

Symptoms

  • Battery light
  • Dim lights
  • Hard starting
  • Random warning lights

What to check

  1. Test the battery
  2. Measure charging voltage with engine running
  3. Clean terminals and grounds

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0562, follow the service information for that make and model.

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