P1614 – NATS Key Not Registered (Nissan)

Description

The ECM detected an unregistered or incorrect immobilizer key.

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Symptoms

  • No start
  • Security light

Causes

  • Wrong key
  • Unprogrammed key
  • ECM mismatch

Diagnosis

  • Check key ID
  • Scan NATS data
  • Verify ECM pairing

Repair

  • Register key
  • Reprogram NATS

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