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2023 VOLKSWAGEN JETTA
1.4L I4 TSI•FWD•AUTOMATIC•gas•turbo
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Repairs0Labor500Torque4307Fluid7DTC1145Battery1Maintenance0Recalls0
17978high severityBody

Engine Start Blocked by Immobilizer

on 2023 Volkswagen Jetta 1.4L I4 TSI · FWD

What this code means

The immobilizer system has prevented the engine from starting because the key was not recognized. Equivalent to OBD code P1570.

Symptoms

  • Engine cranks but will not start
  • Immobilizer warning on dash
  • Key not recognized

Common causes

  • Faulty or unprogrammed key
  • Weak key transponder or battery
  • Failed immobilizer antenna ring
  • ECU/immobilizer communication fault

Diagnostic steps

  1. Try a known-good programmed key
  2. Check immobilizer adaptation status
  3. Test key transponder signal
  4. Inspect antenna ring at ignition
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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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