hey im gettin a p0455 code egr gross leak and was wondering if anyone has had this problem so i can fix it myself i was thinkin of doin the pcv ?

 

P0455 is "evap system gross leak"

Biggest culprit....the gas cap. Make sure it's tight, clear the codes and see if it pops up again as a pending code on your reader.

I just got this code a few days ago when I left my gas cap loose after filling up.

 

If it isn't the gas cap then its probably the EVAP Canister Vent Control Valve - part# 14935-AM60B. Its a common issue on everything from the Sentra, to the Titan and even the GT-R seems. Seems like all the Nissans are using this crappy valve. I just replaced mine a few months back.