P1213 – Immobilizer / NATS Fault (Nissan)

Description

The ECM detected a fault in the NATS immobilizer system.

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Symptoms

  • No start
  • Security light flashing
  • Intermittent start

Causes

  • Key not recognized
  • Faulty antenna
  • ECM communication issue

Diagnosis

  • Test key transponder
  • Inspect antenna
  • Scan immobilizer data

Repair

  • Reprogram key
  • Replace antenna
  • Repair wiring

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