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2017 FORD F-150
5.0L V8 Coyote•RWD•AUTOMATIC•gas
18 active safety recalls on this vehicle — view recalls
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Repairs420Labor1001Torque8720Fluid18DTC3210Battery2Maintenance0Recalls18
P0474moderate severityPowertrain

Exhaust Pressure Control Valve Circuit Intermittent

on 2017 Ford F-150 5.0L V8 Coyote · RWD

What this code means

The exhaust pressure control valve circuit shows an intermittent fault. The signal drops out or fluctuates, common on diesels with exhaust backpressure valves.

Symptoms

  • Check engine light on
  • Rough running or reduced power
  • Poor cold-start performance

Common causes

  • Loose or corroded connector
  • Damaged wiring harness
  • Faulty exhaust pressure control valve
  • Bad PCM

Diagnostic steps

  1. Read code and check freeze frame
  2. Wiggle-test wiring and connectors
  3. Monitor valve signal for dropouts
  4. Repair wiring or replace valve
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