P045F OBD II Trouble Code Exhaust Gas Recirculation B Control Stuck Closed

How to quickly diagnose, repair, and info on causes and symptoms of a P045F code that indicates a stuck closed B EGR control situation.

Symptoms of P045F OBD II Trouble Code

  • There will likely be no symptoms exhibited with this code
  • Slightly diminished fuel efficiency

Common Causes of P045F OBD II Trouble Code

  • Defective EGR valve
  • EGR control solenoid/valve is bad
  • Open or shorted wiring/connectors in the EGR control circuit
  • Faulty DPFE sensor
  • Bad EGR valve position sensor
  • PCM malfunction or PCM programming error

Severity of P045F OBD II Trouble Code

Since the close position of the EGR valve presents no serious issues, from a drivability standpoint, a code P045F may be addressed at your earliest convenience.