P0405 EGR Sensor A Circuit Low (failed DPFE sensor)

2007 Ford Taurus EGR System testing. EGR valve function, flow and pressure sensor (DPFE) testing is shown, focusing on quick tests you can do on these systems to greatly speed up the troubleshooting process. The tests I demonstrate can be applied to any Ford/Lincoln/Mercury vehicle out there that uses this style of EGR/DPFE system. For more info on DPFE sensor testing, I’ve added a link below to the Ford Ranger case study I mentioned in the video.

Engine Performance Diagnostics chapter 24, page 9

Symptoms
check engine light (P0405, P1000)

Fix
replaced the DPFE sensor

Tests shown
understanding the P1000 code
using the Snap-On Troubleshooter to learn more about component testing
using scan data to check for DPFE signal voltage
understanding Ford EGR systems and how the DPFE monitors flow
how to test a EVR (EGR vacuum regulator) solenoid with a test light
how to test a DPFE sensor signal circuit by unplugging the sensor

Tools used
Autel MS905 MaxiSys Mini Diagnostic System with Connector Kit - USA Version
https://www.jbtoolsales.com/autel-ms9...
Incandescent Test Light https://www.jbtoolsales.com/otc-3633-...

Playlist
(Chapter 8) Pressure Sensor Testing, MAP, BARO, DPFE, fuel tank and rail pressure sensors
   • (Chapter 8) Pressure Sensor Testing, MAP, ...  

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2000 Ford Focus EGR System Tests (EGR, DPFE, EVR) - P1409
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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
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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!

Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.