OBD II Fault Code

  • OBD II P009F

OBD-II Code Decreased engine performance is defined as a Fuel Pressure Relief Control Stuck On

The Fuel Pressure Relief valve is designed to release excessive fuel pressure. When the engine control module (PCM) detects an issue with the Fuel Pressure Relief Valve signal, the PCM will set code P009F.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Engine may stall
  • Increased fuel consumption

Common Problems That Trigger the P009F Code

  • Fuel pressure regulator failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

Common Repairs Needed for the P009F Code

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