P1555 – Electronic Throttle Forced Shutdown (Nissan)

Description

The ECM detected forced shutdown of the electronic throttle system.

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Symptoms

  • Limp mode
  • Reduced power

Causes

  • Motor overheating
  • Sensor fault
  • ECM protection

Diagnosis

  • Check motor temperature
  • Inspect sensors
  • Scan throttle data

Repair

  • Replace motor
  • Repair wiring