Help P0401

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Old Jun 15, 2005 | 08:33 AM
  #1  
rovrman's Avatar
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From: louisiana
Help P0401

Help
service engine soon light is on. code is cm$10 p0401. I need to take a long road trip in 2 weeks. What does this code mean and how to fix it?
1999 F150 4.6 115000 miles on it. It seems to run fine.
Joe
 
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Old Jun 17, 2005 | 11:12 AM
  #2  
TN_Triton's Avatar
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From: Columbia, TN USA
I had the same code. I cleaned the throttle body and cleaned the EGR ports. The EGR ports were completely stopped up. After cleaning EGR ports, I cleaned the IAC. I put it all back together and no more p0401 code. I did this about 3 mths ago. Fixed my problem.

Good article on cleaning throttle body and EGR ports.
Throttle Body and EGR port cleaning
 
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Old Jun 17, 2005 | 02:03 PM
  #3  
projectSHO89's Avatar
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From: St. Louis (Out in the woods)
P0401 is an extremely common code discussed here.

Clogged EGR ports and/or DPFE sensor is the normal reason.

Steve
 
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