What is the main problem with trouble code PO446? Emission control?
I also have a misfire problem @cylinders 2,4,6. I have replaced the wires and plugs!
Thanks in advance!!!!

Pete

 

is the emission control problem minor or gross? if its minor evap leak, its probably a bad gas cap.

 

Hi , My 04 sonata gets a p446 code also , my dealer says it because I drive on a dirt road, any way there is a small filter inside the left rear fender bolted to the filler pipe ,it picks up the dust from the rear tire , I clean it each time I change oil ,(once a month) and that takes care of the PO446 code . You need to remove the plastic inter fender panel to get to it ,not hard to do, as for the missfire check plugs , good luck Slimone