P0449 Condition for computer test (i read the sticky)

[waterkeeper03]

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!

[j cAT]

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.

[waterkeeper03]

Originally Posted by j cAT

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