P1249 – Turbocharger Boost Sensor Range/Performance (Nissan)

Description

The ECM detected a turbo boost sensor signal outside the expected range.

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Symptoms

  • Low power
  • Overboost
  • Hesitation

Causes

  • Faulty sensor
  • Vacuum leak
  • Wastegate issue

Diagnosis

  • Check boost pressure
  • Inspect vacuum lines
  • Test sensor

Repair

  • Replace sensor
  • Repair vacuum leaks
  • Fix wastegate