Not to sound like a noob.. but got a code for p0400 for egr flow malfunction.. im going to take a look at it on monday.. i just cleaned the egr like a month ago.. ther is no sticking of the plunger or anything... what do u guys suggest to look for.. to make the quest a little easier..

 

morning bump......

 

I had this 0302 code 2 yrs ago, my problem was resolved by replacing EGR solenoid valve..maybe these threads may help:

http://forums.maxima.org/showthread.php?t=350528>
http://forums.maxima.org/showthread.php?t=350528>

EGR troubleshooting guide:
http://img52.photobucket.com/albums/v158/evilBIGD/EGR/>

 

anybody else... come on guys

 

Just replace it! I screwed around with replacing the tube and then still had to replace the egr valve. For $100 and the caustic enviroment that it operates, replacement will probably fix your 0400(low flow)

 

http://forums.maxima.org/showthread.php?t=470051
this thread has some useful info