P009B OBD II Trouble Code Fuel Pressure Relief Control Circuit/Open

How to quickly diagnose, repair, and info on symptoms and causes of a P009B code that indicates an open or malfunction of the fuel pressure relief control circuit.

Symptoms of P009B OBD II Trouble Code

  • Engine will not start
  • Poor engine performance
  • Check Engine Light illuminated
  • Fuel dripping from tailpipe
  • Increased fuel consumption

Common Causes of P009B OBD II Trouble Code

  • Defective fuel pump
  • Faulty fuel pressure relief valve
  • Fuel pressure regulator failure
  • Corroded or damaged connector
  • Faulty or damaged wiring
  • Faulty PCM

Severity of P009B OBD II Trouble Code

The severity of this code is normally moderate based on the specific malfunction.