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2012 FORD F-150
3.5L V6 EcoBoost•4WD•AUTOMATIC•gas•turbo
4 active safety recalls on this vehicle — view recalls
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Repairs437Labor509Torque3536Fluid10DTC1137Battery1Maintenance0Recalls4
B1600high severityBody

PATS Ignition Key Transponder Signal Not Received

on 2012 Ford F-150 3.5L V6 EcoBoost · 4WD

What this code means

The anti-theft system did not receive a signal from the key transponder. The engine will not start without a valid key signal.

Symptoms

  • Engine cranks but no start
  • Security light flashing
  • Key not detected

Common causes

  • Faulty key transponder
  • Damaged antenna ring
  • Wiring fault to transceiver
  • Non-programmed key used

Diagnostic steps

  1. Scan for B1600
  2. Test with known good key
  3. Inspect antenna ring and wiring
  4. Reprogram or replace key as needed
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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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