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exhaust in cabin

  1. Exhaust leak and P0420 code (catalyst efficiency)

    Bought the 01 Jetta Tuesday. On my way home noticed that the HVAC system was blowing exhaust into the cabin (or at least it sure smelled like it). On the way to work today (110 miles ownership) the engine light came on. Auto Zone ran the diagnostics and returned a P0420 code. I realize what the...