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

P06EF

Engine Restart Performance

After a stop-start auto-stop the engine takes longer than calibrated to restart, or restart is missed. Possible causes are weak starter, low battery state of charge, weak crank position signal at low RPM, or a fuel rail that lost prime.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / EF

Possible causes

  • Battery state of charge low high

Symptoms

  • Check engine light on
  • Possible limp mode or no-start
  • Multiple follow-up faults across modules
  • Reset/relearn may be needed after repair

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 120–800 €
  • Estimated time: 0.6–3 h
  • Component: starter motor
  • Component: battery
  • Component: crankshaft position sensor
  • 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