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

P003F

A Camshaft Profile Actuator A Control Stuck On Bank 2

The intake cam profile actuator (profile A, bank 2) stays engaged when commanded off — stuck in high-lift profile. Idle quality and emissions affected.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 3F

Possible causes

  • Locking pin stuck engaged high
  • Carbon or debris buildup preventing free movement low
  • Component wear with age - mechanical play low

Symptoms

  • Check engine light on
  • Power loss especially in mid-rpm range
  • Possible rough idle or stalling
  • Increased fuel consumption

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 80–1000 €
  • Estimated time: 0.5–5 h
  • Component: cam profile actuator
  • Component: oil control valve
  • MIL / check engine light
  • emissions-relevant
  • drive cycle required

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