I keep getting the 0302 code for EGR System Hi/Low Flow. Everytime I reset it, it comes back. Has anyone fixed this problem? What needs to be done? Thanks.

 

You may need to clean all the EGR passages to get that code to go away.

 

What ^^^ said. Specifically the EGR guide tube that runs from the EGR valve to the plenum needs to be cleaned and the EGR port on the plenum itself needs to be cleaned.

 

Tom do you do EGR cleaning?

 

I personally don't, but the shop I'm in sure can. He's a bit $$ though..

 

Is this something I can do myself ?

 

I had this code for almost a month, after I replaced EGR solenoid valve my problem was resolved...others on this forum cleaned Egr passages and that did the trick, try replacing Egr solenoid valve first (easier to do)..part only costs about $60..also this link will help:

http://photobucket.com/albums/v158/evilBIGD/EGR/

 

This really doesn't pertain specifically to the 0302 code, but I can't post a new question (even though I'm registered and logged in) nor am I authorized to search to see if this question has already been answered. So...

Does anyone know the reset sequence for the EGR sensor (and O2 sensor) for a '96 Maxima? After 316,000 miles I finally had to have my transmission rebuilt because it was sending nasty messages to the ODBD II computer. That was over 1,600 miles ago and now some of the sensors are still reading "not ready", causing it to fail the Texas inspection.

Last year I had a similar problem after changing a faulty O2 sensor. I paid Nissan $80 to run it through the necessary drive pattern to reset the sensors. This year when I asked them to do it, they looked at me like I was crazy. "You just have to drive it a little while," they told me. I would think that 1,600 miles is more than "a little while"!

Thanks. Sorry about crashing the thread, but I need help bad!

 

I am dealing with the same thing, had an emissions error, replaced the part, but not ready on re-inspection. I found these driving patterns online, use the one specific to your car.



http://lyberty.com/car/Maxima_A32_docs/NTB98-018c.pdf

 

I have this same code, egr is really hard to get at under all those hoses and stuff.. Looks like i'll just stare at the yellow light a little longer

 

I had this code too, but ignored it. I changed the knock sensor and both front O2 sensors, and the EGR and knock sensor codes went away. ????????????