Code P0401
Posting Guru
Joined: Nov 2004
Posts: 2,155
Likes: 1
From: sunny fla sometimes windy
What is the problem? If it is running fine redo the test things can show up funny sometimes in any kind of test, That's why good researchers test, test then retest!!
What is the condition of the egr probably just need to spray it down, or the tube is clogged with build up!!! Put your truck info in your signature so we know what you have and don't have to guess!! I think you have a 94 302, auto with 31x10.50 4:10 gears with a trailer hitch Am I right???
What is the condition of the egr probably just need to spray it down, or the tube is clogged with build up!!! Put your truck info in your signature so we know what you have and don't have to guess!! I think you have a 94 302, auto with 31x10.50 4:10 gears with a trailer hitch Am I right???
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Originally Posted by blue beast
What is the problem? If it is running fine redo the test things can show up funny sometimes in any kind of test, That's why good researchers test, test then retest!!
What is the condition of the egr probably just need to spray it down, or the tube is clogged with build up!!! Put your truck info in your signature so we know what you have and don't have to guess!! I think you have a 94 302, auto with 31x10.50 4:10 gears with a trailer hitch Am I right???
What is the condition of the egr probably just need to spray it down, or the tube is clogged with build up!!! Put your truck info in your signature so we know what you have and don't have to guess!! I think you have a 94 302, auto with 31x10.50 4:10 gears with a trailer hitch Am I right???
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Originally Posted by blue beast
Darn it that was my second guess!!! What issues are you having? Just the code or is it running phunky?
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Originally Posted by blue beast
What is the problem? If it is running fine redo the test things can show up funny sometimes in any kind of test, That's why good researchers test, test then retest!!
What is the condition of the egr probably just need to spray it down, or the tube is clogged with build up!!! Put your truck info in your signature so we know what you have and don't have to guess!! I think you have a 94 302, auto with 31x10.50 4:10 gears with a trailer hitch Am I right???
What is the condition of the egr probably just need to spray it down, or the tube is clogged with build up!!! Put your truck info in your signature so we know what you have and don't have to guess!! I think you have a 94 302, auto with 31x10.50 4:10 gears with a trailer hitch Am I right???
New User
Joined: Nov 2005
Posts: 11
Likes: 0
From: harrisonburg,va
I had the same problem with a '95 Crown Victoria. Light would re appear after I cleared it. I took the throttle body apart and found the passage to the EGR valve was completely clogged with carbon. I cleaned it out and no more check engine light.
Trending Topics
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Originally Posted by sprtkr1
I had the same problem with a '95 Crown Victoria. Light would re appear after I cleared it. I took the throttle body apart and found the passage to the EGR valve was completely clogged with carbon. I cleaned it out and no more check engine light.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Senior User
Joined: Apr 2004
Posts: 443
Likes: 1
From: Central Va.
p0401
Pull vac on egr when running - engine should stumble severly or just cut off-IF it doesn't do this the egr passages are stopped up(carbon)If it DOES stall or stumble Replace DPFE sensor(only on 96 bronco-obdII)Delta pressure feedback sensor.Check two hoses for debris,clean and or replace. Clear codes.. At my dealership when it comes in for this code, p0401 in memory(KOEO) you than do a running test (KOER) and if it generates a p1408 its automatic that the DPFE is bad!!
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Code P0401
Originally Posted by Trublufords
Pull vac on egr when running - engine should stumble severly or just cut off-IF it doesn't do this the egr passages are stopped up(carbon)If it DOES stall or stumble Replace DPFE sensor(only on 96 bronco-obdII)Delta pressure feedback sensor.Check two hoses for debris,clean and or replace. Clear codes.. At my dealership when it comes in for this code, p0401 in memory(KOEO) you than do a running test (KOER) and if it generates a p1408 its automatic that the DPFE is bad!!
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Code P0401
Originally Posted by Trublufords
Pull vac on egr when running - engine should stumble severly or just cut off-IF it doesn't do this the egr passages are stopped up(carbon)If it DOES stall or stumble Replace DPFE sensor(only on 96 bronco-obdII)Delta pressure feedback sensor.Check two hoses for debris,clean and or replace. Clear codes.. At my dealership when it comes in for this code, p0401 in memory(KOEO) you than do a running test (KOER) and if it generates a p1408 its automatic that the DPFE is bad!!
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Code P0401
Originally Posted by Trublufords
Pull vac on egr when running - engine should stumble severly or just cut off-IF it doesn't do this the egr passages are stopped up(carbon)If it DOES stall or stumble Replace DPFE sensor(only on 96 bronco-obdII)Delta pressure feedback sensor.Check two hoses for debris,clean and or replace. Clear codes.. At my dealership when it comes in for this code, p0401 in memory(KOEO) you than do a running test (KOER) and if it generates a p1408 its automatic that the DPFE is bad!!
Thread Starter
|
Senior User
Joined: Oct 2004
Posts: 188
Likes: 0
Code P0401
Originally Posted by Trublufords
Pull vac on egr when running - engine should stumble severly or just cut off-IF it doesn't do this the egr passages are stopped up(carbon)If it DOES stall or stumble Replace DPFE sensor(only on 96 bronco-obdII)Delta pressure feedback sensor.Check two hoses for debris,clean and or replace. Clear codes.. At my dealership when it comes in for this code, p0401 in memory(KOEO) you than do a running test (KOER) and if it generates a p1408 its automatic that the DPFE is bad!!
Thread
Thread Starter
Forum
Replies
Last Post
dfawvor
1987 - 1996 F150 & Larger F-Series Trucks
1
Oct 3, 2003 08:17 AM