Error code P0401 on a 2004 Ford Focus indicates EGR Insufficient Flow, which usually means your DPFE sensor needs to be replaced. If you're not sure though, and you shouldn't be, watch this video to learn how to perform a test that will make sure your DPFE sensor is actually broken before you replace it.
———
Start your career in Graphic Design with the WonderHowTo's Beginners’s Guide to Photoshop Course
How To:
Open Your Car Door Without a Key: 6 Easy Ways to Get in When Locked Out
How to Fix Car Dents:
8 Easy Ways to Remove Dents Yourself Without Ruining the Paint
How To:
Unlock a Car Door Using a Cell Phone and a Faraway Keyless Remote (Faux-To?)
How To:
Take grips and bar weights off a Honda 919 motorcycle
How To:
Change your shifter lever and tie rod on a motorcycle
How To:
Check fuel pressure regulators for leaks on GM engines
How To:
Use Lysol to Clean Bacteria Out of Your Car's Air Conditioning System
How To:
Bypass the kickstand safety switch on a motorcycle
How To:
Reset a Busted Speedometer After Jump-Starting or Replacing a Vehicle's Battery
How To:
Clean your AC drain if water is spilling into your car
How To:
Fix error code P0300 for random misfires on your car
How To:
Flush your air conditioning to prevent comebacks
How To:
Fix your own drive shaft with new U-joints
How To:
Remove the Door Panel from a 2002 Ford Explorer
How To:
Hotwire a Nissan Patrol if you lose your keys
How To:
Remove window tint with a steam cleaner
How To:
Replace spark plugs in a 2005 Jeep Grand Cherokee
How To:
Replace drum brake shoes on a 2001 Honda Odyssey
How To:
Fix transmission and oil seal leaks fast with AT-205 Re-Seal
How To:
Fix a Huge Dent in Your Car at Home Without Ruining the Paint Job
How To:
Open Your Car Door Without a Key: 6 Easy Ways to Get in When Locked Out
How to Fix Car Dents:
8 Easy Ways to Remove Dents Yourself Without Ruining the Paint
How To:
Unlock a Car Door Using a Cell Phone and a Faraway Keyless Remote (Faux-To?)
How To:
Take grips and bar weights off a Honda 919 motorcycle
How To:
Change your shifter lever and tie rod on a motorcycle
How To:
Check fuel pressure regulators for leaks on GM engines
How To:
Use Lysol to Clean Bacteria Out of Your Car's Air Conditioning System
How To:
Bypass the kickstand safety switch on a motorcycle
How To:
Reset a Busted Speedometer After Jump-Starting or Replacing a Vehicle's Battery
How To:
Clean your AC drain if water is spilling into your car
How To:
Fix error code P0300 for random misfires on your car
How To:
Flush your air conditioning to prevent comebacks
How To:
Fix your own drive shaft with new U-joints
How To:
Remove the Door Panel from a 2002 Ford Explorer
How To:
Hotwire a Nissan Patrol if you lose your keys
How To:
Remove window tint with a steam cleaner
How To:
Replace spark plugs in a 2005 Jeep Grand Cherokee
How To:
Replace drum brake shoes on a 2001 Honda Odyssey
How To:
Fix transmission and oil seal leaks fast with AT-205 Re-Seal
How To:
Fix a Huge Dent in Your Car at Home Without Ruining the Paint Job
Be the First to Comment
Share Your Thoughts