2002 Nissan XTerra SE 3.3L with engine code P1491

Question

I have a 2002 nissan xterra and my check engine light is on and i checked the codes and got two codes. 1 p0328 knock senser. 2 p1491 cut vavle senser. I change the fule filter hoping that the light would go out but it is still on can you help me.

Answer 1

Start by checking the hoses and the Vacuum cut valve bypass valve. The valve is next to the EVAP canister on the back of your Xterra.

P1491 NISSAN - Vacuum Cut Valve Bypass Valve
Read more: https://www.autocodes.com/p1491_nissan.html