fault code p400 - egr flow function

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03-02-2005, 02:53 PM

edwardh1

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fault code p400 - egr flow function

Auto zone did a scan and says this is whats causing the check engine light.

Any simple steps to check this out further?
99 max 55k miles
runs fine

03-02-2005, 02:59 PM

Jepht20

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with no rudeness added, please read around because there have been more than 4 threads about this in the past 3 days...it is also discussed in the faq's in the stickies. goodluck and please look and read around.

08-01-2009, 01:19 PM

marktab

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Location: Atlanta, GA

Posts: 87

Quote:

Originally Posted by edwardh1

Auto zone did a scan and says this is whats causing the check engine light.

Any simple steps to check this out further?
99 max 55k miles
runs fine

Yes I had the same code -- I will be posting a comprehensive pictures and directions thread on how to clean the EGR tube. It will take time, but in my case the only thing I bought was fuel-injector safe carburetor cleaner. The code has been GONE for 500 miles.

08-01-2009, 02:05 PM

edwardh1

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Posts: 490

Please do post

08-01-2009, 02:14 PM

marktab

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Location: Atlanta, GA

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Quote:

Originally Posted by edwardh1

Please do post

Posted!

http://forums.maxima.org/4th-generat...ing-p0400.html

08-01-2009, 04:22 PM

max ride 41

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Quote:

Originally Posted by marktab

theres a how-to in the stickies....

08-01-2009, 04:33 PM

FallenOne

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4 Year Old BUMP FAIL FAIL FAIL FAIL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NOW I KNOW WHY PMOHR FEELS! STOP BUMPING OLD CRAP AND SEARCH *&%%$&^%&*&^$&^$*&%&*$$!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!