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2020 FORD F-150
5.0L V8 Coyote•RWD•AUTOMATIC•gas
11 active safety recalls on this vehicle — view recalls
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Repairs420Labor1001Torque8720Fluid18DTC2312Battery2Maintenance0Recalls11
B1681high severityBody

PATS Transceiver Module Signal Not Received

on 2020 Ford F-150 5.0L V8 Coyote · RWD

What this code means

The immobilizer module is not receiving a signal from the transceiver module. This prevents key reading and vehicle starting.

Symptoms

  • No-start condition
  • Security light on
  • Key not read

Common causes

  • Faulty transceiver module
  • Open wiring to transceiver
  • Poor connector contact
  • PCM/immobilizer communication fault

Diagnostic steps

  1. Scan for B1681
  2. Check transceiver power and signal wiring
  3. Inspect connectors for corrosion
  4. Replace transceiver module if faulty
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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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