P0401 2002 F150 EGR System Overview and Troubleshooting Guide
I recently suffered the very common P0401 error code on my 2002 F150 4.6L 4x4. I spent hours researching the problem on various forums and YouTube. I decided to make a video that provides the amateur with an overview of the P0401 problem, the EGR system, typical points of failure, and a trouble shooting guide. P.S. I don't want this to be a spoiler, but WranglerStar was right. Had I not been a wussy and turned the actual repair part over to mechanics as opposed to trying to fix it myself, I would have saved $300 ($240 of which was for unnecessary repairs) and many hours of running around.
Ford EGR DPFE Sensor Engine Repair Light
http://goo.gl/R5NL2u Click link to get your EGR Sensor. Learn how to turn off the the Ford F150 Check engine or Service engine light Code P1401. Replace the EGR sensor or the DPFE sensor to fix the problem. Buy the Ford Motorcraft part for this replacement. I had to replace the generic sensor a year later. Motorcraft part has been working good.
How To Clean A Ford MAF Sensor - Simple & Effective
Cleaning a Ford mass air flow sensor. This procedure should work on most Ranger Mustang Taurus F150 etc. from the 1990's and 2000's. After doing this, my truck performed much better. Smoother running, and more responsive. I used paint thinner and denatured alcohol with a cotton swab.
Wells Ford EGR DPFE Training with Sgt. Tech P0400, P0401, P0402,
http://www.wellsve.com/ This video demonstrates how a Ford EGR, with a DPFE sensor, system functions. It also shows specifications for testing the system and sensor. Including check engine light codes P0400, P0401, P0402, P1408 what they mean and common causes. Why wells EGR valves and DPFE sensors are the best. "The information presented in this program is based on a specific diagnostic case and might not directly apply to the vehicle you are repairing. We do not represent or warrant that the information presented is complete or error free. Please take all safety precautions. We disclaim any and all liability for losses, injuries or damages in connection with your repair."