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2015 KIA FORTE
1.8L I4•FWD•AUTOMATIC•gas•G4NB
1 active safety recall on this vehicle — view recalls🏆Sponsored by Simon-Olivier Ricci
Repairs401Labor473Torque1396Fluid7DTC1837Battery1Maintenance0Recalls1
P3655high severityPowertrain

GDI Fuel Metering Unit Control Stuck

on 2015 Kia Forte 1.8L I4 · FWD

What this code means

The high-pressure fuel pump metering unit that controls fuel volume entering the pump is stuck, causing incorrect fuel rail pressure.

Symptoms

  • Check Engine Light
  • Fuel pressure too high or too low
  • Engine stalling
  • Hard starting
  • Rough running
  • Fuel smell from engine

Common causes

  • Metering unit solenoid failure
  • Contaminated fuel blocking metering valve
  • Metering unit wiring short
  • Mechanical debris in metering valve
  • PCM driver circuit failure

Diagnostic steps

  1. Monitor fuel metering command vs actual rail pressure
  2. Test metering unit solenoid resistance
  3. Inspect fuel quality
  4. Command metering unit through range with scan tool
  5. Check PCM driver output

Repair notes

Replace high-pressure fuel pump metering unit. May require full pump replacement depending on design. Check fuel quality.

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