P0455 Nissan -

Question

i have a 2004 nissan with po455 code .know i have replaced the knock sencer and gas cap and the valve on the fender on the driver side and yesterday i filled the tank and smelled no gas or didnt see it leak.however i did smell gas at half tank.could it be thevacuum cut valve bypass valve or the canister vent control valve ?ken

Answer 1

where did you smell gas from? rear or front of car?

first thing to do if replace the gas if you have not done so with a Nissan one, dont use aftermarket. you can check to if there are any broken or loose hoses near the engine bay or near the evap system in the rear of the car near the gas tank.