P0401 code with weird noise
 

Yes i know there are threads here with the P0401 code Insufficient EGR Flowand i have read most of them but it still hasnt solved my problem. I checked all the lines and they seem to be on the right locations, none of them popped off.

Whenever i go into boost though I hear a nasty leak sound and its pretty damn loud. It sounds kinda like a squeel as if the vacuum line has a small leak and air is escaping but im not exactly sure whats going on. Boost is still somewhat the same but drivability has changed a slight bit. The car normally is pretty responsive, but now its less responsive.

Any Input/Questions regarding is greatly appreciated.

Anyone local not on SCE willing to come check it out is more than welcome as well

located in Whittier, CA

-yoshi

There is a hose under the intake manifold throttle bosy area that pops off and casues the p0401. Check this {thumbup}

An Yes I'm on SCE

^^^i checked all the hoses *im sure i did*

and none of them seem to be popped off.....

bump to resolve this ****

Like oldevodude said check the hoses under and behind the throttle body. It's really small and thin like a piece of spagetti. I'll bet you that is your 401. It's happened to me twice. Since then I have zipped tied it and no more 401.

do a boost leak test

Take it to RRE....they'll figure it out

please read what i wrote.

i said i checked ALL the hoses yet my problem still hasnt been resolved.

thank you for your input though {thumbup}

could be a possibility

i'd rather not...

thank you though.

tomorrow im going to take off the EGR valve and then im going to clean it to see if thats the problem, im also going to double check all the lines again. freakin weird i tell ya..

problem solved

How did you fix the problem?

Same code here, waiting for the fix.....

I know help us out!!

since it was so simple ill tell you guys. LOL

basically what happened, was the one of my intercooler pipes was ripped. it was ripped right where it meets the throttle body. all i did was cut the IC hose, refitted and voila! back to normal!

so check your IC hoses!!! make sure theres no tears in it!