Yes, another Ford EGR problem! This one shows some of the same procedures as my other Ford EGR videos (listed below) but there is a little more attention given to the DPFE sensor in this one.

Engine Performance Diagnostics chapters 24

symptoms 50

  • check engine light (P0401) EGR Insufficient Flow Detected

fix 50

  • replace faulty DPFE sensor

test shown enh 50

  • how to test for proper EGR flow
  • how to test the EGR valve itself
  • how to verify vacuum supply from the EVR solenoid to the EGR valve
  • how to manually open an EGR valve regulator solenoid (EVR)
  • how to test the delta pressure feedback sensor (DPFE)
  • how to verify wiring integrity

Tools used

  • scan tool
  • labscope
  • incandescent test light
  • backprobing pins
  • digital multimeter (may be used in place of lab scope)

end faq

Playlist

(Chapter 24) EGR Flow and System Tests

Related videos:

How to test an EGR DPFE sensor (EGR flow test) - Ford, Lincoln, Mercury :

2000 Ford Focus EGR System Tests (EGR, DPFE, EVR) - P1409:

How to test for proper EGR flow (restricted intake passage) - Ford :

Ford EGR Flow Testing (P0401, P0402, P0405):

end faq


For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available as an eBook or paper book.

Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium. There is a 14 day free trial.

On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

 

You have no rights to post comments