P1009 – Valvetronic Position Sensor Correlation (BMW)

Description

P1009 BMW indicates the Valvetronic position sensors do not correlate correctly.

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Symptoms

  • Rough idle
  • Reduced power
  • Hesitation

Causes

  • Sensor mismatch
  • Wiring fault
  • Mechanical misalignment

Diagnosis

  • Check sensor signals
  • Inspect wiring
  • Check alignment

Repair

  • Replace sensor
  • Repair wiring
  • Realign mechanism