the code p0447 and p0448 on infinity g35

Question

i already flush all the tube, the canister vent, the whole evap canister, and the pressure sensor. but the light's still on. what should i do now ? should i check and replace the purge control valve ?

Answer 1

The P0447 is for the vent control valve. The 448 is also for the vent control valve. If you haven't, you need to start with replacing the vent control valve. If you have replaced the vcv, then the next step is to smoke test the evap system and check it for leaks. Also,check the wiring to the vcv and make sure there is power to the valve. Then, ohm the signal wire to be sure it good so when the ecm sends signal to close the valve, it is actually closing.