P1519 – Idle Control System Learning Not Completed (Nissan)

Description

The ECM detected that idle control system learning did not complete.

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Symptoms

  • Rough idle
  • Stalling

Causes

  • Dirty throttle body
  • Air leak
  • Incorrect reset

Diagnosis

  • Perform idle relearn
  • Inspect throttle body
  • Check vacuum lines

Repair

  • Clean throttle body
  • Fix leaks

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