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

P000A

A Camshaft Position Slow Response Bank 1

The intake camshaft phaser on bank 1 responds too slowly to commanded position changes. Often caused by VVT solenoid sticking, oil aging, or low oil pressure.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 0A

Possible causes

  • VVT solenoid clogged with sludge high
  • Low oil pressure or wrong oil viscosity medium
  • Cam phaser worn internally medium

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: 60–1200 €
  • Estimated time: 0.5–6 h
  • Component: vvt solenoid intake bank1
  • Component: cam phaser intake
  • Component: engine oil
  • 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