CODE P0401 HELP!!

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raul.ruiz

New Member

Dec 4, 2007

6

0

0

Jan 14, 2008

#1

• Jan 14, 2008

• #1

Hi guys!

I need help with my stang, i own a 2002 mustang V6 manual trans with flowmaster dual exhaust. The SES light is on, so i came to autozone and they read the code P0401, i read that is a common fault in our cars and most of the time is the DPFE sensor, is that correct? is there something that you would recommend to check/clean before buying any parts?I would also like to know where to buy parts if necesary.

I would appreciate any advice.


Raul R.

 

R

raul.ruiz

New Member

Dec 4, 2007

6

0

0

Feb 22, 2008

#2

• Feb 22, 2008

• #2

code 0401

I went to autozone and bought the EGR sensor and the service engine soon is not there yet, about 150 miles since I replace it. I think that was the problem, I feel smother the engine on steady velocity and more miles per galon.

Maybe this can help someone with same problem.

 

016erstang

New Member

Feb 20, 2008

19

0

0

Norfolk, Va

Feb 27, 2008

#3

• Feb 27, 2008

• #3

You know I have a 2001 and did the same layout but I get a code of p0402 wich is insuffecient exhaust flow yet and I replaced my egr sensor about 4 months ago anyone know what could also be

 

NMStang218

New Member

Aug 15, 2003

19

0

1

Mar 21, 2008

#4

• Mar 21, 2008

• #4

016erstang said:

You know I have a 2001 and did the same layout but I get a code of p0402 wich is insuffecient exhaust flow yet and I replaced my egr sensor about 4 months ago anyone know what could also be

Click to expand...

did you replace the egr sensor or the dpfe?

 

016erstang

New Member

Feb 20, 2008

19

0

0

Norfolk, Va

Mar 22, 2008

#5

• Mar 22, 2008

• #5

yeah i replaced the egr sensor and replace the egr valve itself as well but i did notice that a low idle it sounds like air is escaping from the passenger side i think they might not tighten everything down right. its like a low ticking sound

 

NMStang218

New Member

Aug 15, 2003

19

0

1

Mar 23, 2008

#6

• Mar 23, 2008

• #6

016erstang said:

yeah i replaced the egr sensor and replace the egr valve itself as well but i did notice that a low idle it sounds like air is escaping from the passenger side i think they might not tighten everything down right. its like a low ticking sound

Click to expand...

"ticking" is a good indication of an exhaust leak. Check all connections and let us know!

 

2

2002BLGT

Well-Known Member

Dec 18, 2003

2,945

4

59

Bedford VA

Mar 24, 2008

#7

• Mar 24, 2008

• #7

check the rubber hoses going to the DPFE sensor , sometimes they burn up ...