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

P2563

Turbocharger Boost Control Position Sensor Circuit

The position feedback sensor on the variable-geometry or wastegate turbocharger actuator is not communicating or is implausible. Without position feedback, boost control runs in default mode and power is reduced.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 63

Possible causes

  • Position sensor failed high
  • Wiring open or chafed near turbo medium

Symptoms

  • Charge status indicator shows fault
  • Charging may not start or interrupts
  • Slower-than-expected charge rate

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 200–2000 €
  • Estimated time: 1–5 h
  • Component: turbocharger actuator
  • Component: turbocharger position sensor
  • MIL / check engine light
  • emissions-relevant
  • drive cycle required
  • limp mode possible

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