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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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Repairs418Labor1009Torque7006Fluid18DTC3796Battery2Maintenance0Recalls14
P0039moderate severityPowertrain

Turbo/Supercharger Bypass Valve Control Circuit Range/Performance

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

What this code means

The PCM detects the turbo or supercharger bypass valve control circuit is out of expected range. Boost pressure regulation may be affected.

Symptoms

  • Reduced engine power
  • Check engine light on
  • Poor boost response

Common causes

  • Faulty bypass valve
  • Wiring or connector fault
  • Vacuum leak at valve
  • Failed PCM driver

Diagnostic steps

  1. Scan and record freeze frame data
  2. Inspect bypass valve and hoses
  3. Test valve control circuit continuity
  4. Command valve with scan tool and observe
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