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

P02EC

Diesel Intake Air Flow A Control System - High Air Flow Detected

Air flow through diesel intake throttle A is higher than the commanded set point — flap leaking past the seat or stuck partly open.

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number2 / EC

Possible causes

  • Throttle plate leaks past seat high

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 80–700 €
  • Estimated time: 0.5–3 h
  • Component: diesel intake throttle
  • Component: mass air flow sensor
  • MIL / check engine light
  • emissions-relevant

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