P0420 Volkswagen - bank 1

Question

Is ps0420`"bank 1" the front 02 sensor on 2004 jetta wagon 2.0?

Answer 1

Hi there,

First of all, the code is for a faulty catalytic converter not the O2 sensor. Bank 1 is the only bank on this engine. Sensor 1 is the sensor before the converter and sensor 2 is the O2 senosr after the converter. Chances are either it needs a new converter or sensor 2.