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It is under rear in back of xterra under the spare tire next to evap can.
No idea but I have 181,000 km on my 2006 xterra and need to know what's entailed
The 2004 Nissan Xterra PCV valve is located on the outside of the air cleaner housing. The PCV valve can be found on the back of the air cleaner housing.
IACV-AAC Valve removal 2003 frontier
Here's a photo: http://xterra101.comimagespcv.jpg
There is no valve, you will just need to pull the fuel line near the tank or on either side of the fuel filter. Be ready for a face full of gas and have something to protect yourself from fuel ready as it will be under pressure.
Troublecode P1490 means: EVAP Vacuum Cut Valve Bypass Valve Circuit Malfunction
good luck left rear bumper no room for both hand took me 4 hours
its located in valve body
away from the piston.
A bent valve(s).
underneath the rear of the vehicle near the spare tire if i remember right. it is on the side of a black box (evap canister) it is the "vent control valve". it could be other things than just the valve itself setting this code.