P0449 n i hav e changed the hose n gas cap vent sinoild n canister so were do i go next

Question

Pleas e help this thing is going to be crushed soon if I don't get it figured out I'm tired of spending money. On this .thing. On stuff I don't need or doesnt fix the problem

Answer 1

Hi there,

This code can come up for a variety of reasons. If the code is there after replacing the vent control solenoid, then it may be the wiring to the solenoid or an evap leak at some other location on the system. At this stage to diagnose the truck properly I would do a smoke test. If there is a leak then it will show up and the proper repair can be made. It can also be caused by a bad evap pressure sensor. If the voltage from the pressure sensor doesn't change, then the code could re appear.