On the 3.6L bank one is the passenger side. On other engines it is driver side.
That is passenger side after the catalyst.
Bank 2 - passenger side. Sensor 1 - before the catalytic converter.
That is the sensor in the catalytic converter.
it is the top sensor on the passenger side. use a box end wrench to take it out
Bank 1 refers to the side of the engine where the number 1 cylinder is located and sensor 2 is the down stream or after the catalytic converter sensor.
bank 2 is passenger side, sensor 2 is rear sensor (after catalytic converter)
Upstream, driver side.
Assuming you mean P0135, that would be O2 sensor heater circuit malfunction (bank 1 sensor 1). If the wiring to bank 1 sensor 1 is not damaged, it is probably a bad bank 1 sensor 1 O2 sensor. Replace it.
Trouble code P0042 means: HO2S Heater Control Circuit (Bank 1, Sensor 3)
Bank one is the driver side.
Bank 1 is the driver side on a Durango.Bank 1 is the driver side on a Durango.
I believe it is before the catallytic converter.