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

P0560

System Voltage Malfunction

A general fault in the system voltage seen by the ECU — value implausible, missing, or unstable but without crossing the specific thresholds of P0562 (low) or P0563 (high). Often appears intermittently with a marginal alternator or weak battery.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 60

Possible causes

  • Charging system marginal (aged battery or alternator) high
  • 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: 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