P1523 – Intake Manifold Runner Range/Performance (Nissan)

Description

The ECM detected an IMRC range or performance fault.

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Symptoms

  • Hesitation
  • Poor drivability

Causes

  • Actuator wear
  • Wiring issue
  • Vacuum leak

Diagnosis

  • Check actuator movement
  • Inspect wiring
  • Scan IMRC data

Repair

  • Replace actuator
  • Repair wiring