Question

I got the engine code P1490 on my 2000 Nissan Altima, how do I fix the code?

Answer 1

Hi,

This code is for the vacuum cut solenoid valve. Typically this is repaired by replacing the solenoid valve. Check the 2 vacuum lines to it and make sure there are no leaks. If no leaks replace the valve.

Here is a diagram of it's location.

Answer 2

P1490 NISSAN Code - Vacuum Cut Valve Bypass Valve
Read more: https://www.autocodes.com/p1490_nissan.html