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2015 FORD F-150
3.5L V6 EcoBoost•RWD•AUTOMATIC•gas•turbo
14 active safety recalls on this vehicle — view recalls
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Repairs418Labor977Torque3046Fluid18DTC3800Battery2Maintenance0Recalls14
P0608moderate severityPowertrain

Control Module VSS Output "A" Malfunction

on 2015 Ford F-150 3.5L V6 EcoBoost · RWD

What this code means

The PCM detected a fault in the vehicle speed sensor output signal it sends to other modules. This can affect systems that rely on speed data like the speedometer or transmission.

Symptoms

  • Erratic or dead speedometer
  • Transmission shifting problems
  • Cruise control inoperative

Common causes

  • Faulty PCM
  • VSS output circuit wiring fault
  • Corroded module connectors
  • Internal PCM software fault

Diagnostic steps

  1. Scan for related speed sensor codes
  2. Check VSS output circuit continuity
  3. Inspect PCM connectors for corrosion
  4. Test or reflash/replace PCM
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