P1581 – Throttle Motor Position Learning Not Completed (Nissan)

Description

The ECM detected that throttle motor position learning did not complete.

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Symptoms

  • Rough idle
  • Poor acceleration

Causes

  • Dirty throttle body
  • Incorrect reset
  • Wiring issue

Diagnosis

  • Perform throttle relearn
  • Inspect throttle body
  • Scan throttle data

Repair

  • Clean throttle body
  • Repair wiring