OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P0562

System Voltage Low

Battery / charging system voltage seen by the ECU has dropped below the lower threshold (typically around 10.5 V). Modern ECUs are sensitive to under-voltage and may set this code briefly during cranking on a weak battery.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 62

Possible causes

  • Battery aged or weak high
  • Alternator undercharging medium
  • Corroded battery terminals or ground strap medium

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 80–600 €
  • Estimated time: 0.3–2.5 h
  • Component: battery
  • Component: alternator
  • Component: alternator belt
  • Component: battery cables
  • MIL / check engine light

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication