Need Help - Throwing P0456 code.
My system is throwing a P0456 code so I am trying to check the Evaporative Emission Control System on my 2004 XL-7. I know the most common source of this problem is the gas cap, but that seems to be OK. So, now I am trying to trace the other components of the system. Which leads me to these 2 questions:
One, where is charcoal cannister located on 2004 XL-7?
Second, where is the ECM Controlled Vacuum Switching Valve (VSV) located? This valve seems to be a key part of the system.
This vehicle only has 45K miles on it so it should not be anything particularly unique. Any help would be greatly appreciated.
Thanks in advance,
Last edited by Stokes; 05-06-2008 at 12:51 PM.