P1264 – Immobilizer Communication Line (Nissan)

Description

The ECM detected a communication fault in the immobilizer line.

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Symptoms

  • No start
  • Security warning
  • Intermittent start

Causes

  • CAN wiring fault
  • Antenna issue
  • ECM error

Diagnosis

  • Check CAN wiring
  • Inspect connectors
  • Scan immobilizer data

Repair

  • Repair wiring
  • Replace antenna
  • Repair ECM