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2021 SUBARU LEGACY

2.5L H4AWDCVTgas
3 active safety recalls on this vehicle — view recalls
Repairs0Labor505Torque5075Fluid9DTC919Battery0Maintenance0Recalls3
P0089moderate severityPowertrain

Fuel Pressure Regulator 1 Performance

on 2021 Subaru Legacy 2.5L H4 · AWD

What this code means

The fuel pressure regulator is not maintaining the commanded fuel pressure.

Symptoms

  • Check Engine Light
  • Fluctuating idle
  • Hesitation
  • Poor fuel economy

Common causes

  • Faulty fuel pressure regulator
  • Vacuum line issue
  • Fuel pump weak
  • Restricted fuel supply

Diagnostic steps

  1. Monitor fuel pressure at idle and under load
  2. Test vacuum line to regulator
  3. Check fuel pump output
  4. Inspect fuel lines

Repair notes

Replace fuel pressure regulator.

Other Powertrain codes on this vehicle

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