P1247 – Turbocharger Boost Sensor Low Input (Nissan)

Description

The ECM detected a low input signal from the turbo boost sensor.

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Symptoms

  • Low power
  • Slow acceleration
  • Underboost

Causes

  • Vacuum leak
  • Faulty boost sensor
  • Wiring issues

Diagnosis

  • Check boost pressure
  • Inspect vacuum lines
  • Test sensor

Repair

  • Repair vacuum leaks
  • Replace sensor
  • Repair wiring