P1210 – Immobilizer / ECM Communication (Nissan)

Description

The ECM detected a communication fault with the immobilizer system.

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Symptoms

  • No start
  • Security light flashing
  • Intermittent start issues

Causes

  • Faulty NATS antenna
  • ECM communication fault
  • Key transponder issue
  • Wiring problems

Diagnosis

  • Check NATS antenna
  • Test key transponder
  • Inspect wiring
  • Scan immobilizer data

Repair

  • Replace antenna
  • Reprogram key
  • Repair wiring

Related Problems

Related Fault Codes