ODB code P0420

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ODB code P0420

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ODB code P0420 - 5/17/2008 7:58:47 PM

hutchda

Posts: 1
Joined: 5/17/2008
Status: offline

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?