i have codes, po420, po440,p0441,po442,po446,....i know it cant be much cuz my truck still runs like a beast, i have noticed more fuel consumption,...i have had my black B, a year, only had to change the plugs and a coil pack, and a gas cap when i first got her. no codes since then and now this,....help or suggestions anyone? pleeeezz??? i love this thing, the codes drive me nutz and i dont do mech shops,...i drive trucks for a living, have fixed them in a pinch, this cant be that hard.

 

Start here: http://www.obd-codes.com/trouble_codes/

Those are all evap codes. I would look at the Evap canister, as well as the sensors related to it. I seem to get a lot of requests for the Evap canister for 01-02 4Runners