P0449 Condition for computer test (i read the sticky)

truck is a 2010 silverado 5.3
i would like to know the exact conditions to trigger the computer to run this test for p0449 code.

i have 2 days to replace this part and clear the code or it will interfere with the wifes vacation (and the rest of my happiness). i have the silinoid going in tonight, need to get the truck to test and clear the CEL so my emissions will pass.

i once found the exact conditions to trigger evap testing on my ford, but cannot find online for this truck.

thank you in advance!

this code will throw when the engine is started . this is an electrical problem. could be the sol coil/connector is bad or other wiring / connectors.

on the evap system the other tests are done when the fuel tank is between 3/4 and 1/4..

this code will throw all the time because the electrical circuit is messed up ,because it is not seeing the correct feedback.

this code will throw when the engine is started . this is an electrical problem. could be the sol coil/connector is bad or other wiring / connectors.

on the evap system the other tests are done when the fuel tank is between 3/4 and 1/4..

this code will throw all the time because the electrical circuit is messed up ,because it is not seeing the correct feedback.


so assuming wires are all intact, all i have to do is replace the part and turn the key? EXCELLENT

thank you