Back to 2009 Subaru Forester

2009 SUBARU FORESTER

2.5L H4AWDCVTgas
18 active safety recalls on this vehicle — view recalls
Repairs0Labor504Torque3865Fluid9DTC861Battery0Maintenance0Recalls18
P0045moderate severityPowertrain

Turbo/Supercharger Boost Control Solenoid Circuit/Open

on 2009 Subaru Forester 2.5L H4 · AWD

What this code means

The PCM detected an open circuit in the turbocharger or supercharger boost control solenoid.

Symptoms

  • Check Engine Light
  • Loss of boost pressure
  • Reduced power
  • Limp mode

Common causes

  • Faulty boost control solenoid
  • Wiring damage
  • PCM failure
  • Corroded connector

Diagnostic steps

  1. Test solenoid resistance
  2. Inspect wiring
  3. Check vacuum lines
  4. Command solenoid with scan tool

Repair notes

Replace boost control solenoid or repair wiring.

Other Powertrain codes on this vehicle

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