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P0562

System voltage low

The ECU has detected system voltage below the acceptable operating range.

What this code means

The ECU has detected system voltage below the acceptable operating range.

Possible causes

  • Weak or discharged battery
  • Alternator or charging fault
  • Loose or corroded battery connections
  • Drive-belt problem
  • Poor earth or power connection

Common symptoms

  • Battery or check-engine warning lights
  • Hard starting
  • Dimming lights
  • Erratic electrical behaviour
  • Possible transmission or steering warnings

Checks to make

  1. Test battery voltage
  2. Check charging voltage with the engine running
  3. Inspect battery terminals and main earth connections
  4. Check alternator belt and charging wiring

Safety

  • Do not replace parts from the code alone. Confirm the fault with live data, wiring checks and manufacturer procedures. Keep clear of hot or moving engine components.

Model notes

The code definition is generic; exact diagnostic thresholds, component locations and repair procedures vary by vehicle.