ODB code P0420
#1
ODB code P0420
I have a 2001 volkswagon golf 1.8L turbo engine, auto with around 121,000 miles. I keep getting a P0420 code. I have changed the catalytic convertor, upsteam and down stream O2 sensors and even had it at a volkswagon dealer who doesn't show any problems in the car. I even got an inpection sticker. Any suggestions on what I may be missing?
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