P0513 – Incorrect Immobilizer Key

Description

The ECM detects an incorrect or unrecognized immobilizer key signal.

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Symptoms

  • No start
  • Security light on
  • Intermittent start issues

Causes

  • Faulty key transponder
  • Immobilizer antenna fault
  • ECM fault

Diagnosis

  • Test with spare key
  • Check antenna ring
  • Scan immobilizer data

Repair

  • Replace key
  • Replace antenna ring
  • Reprogram immobilizer
  • Replace ECM

Related Problems

Related Fault Codes