How many oxygen sensors are on a dodge ram 1500 03 4.7?

Answer 1

From what I have come to understand there are four o2 sensors, two on each side of the vehicle running from the exhaust manifolds. Each side has one o2 sensor before and one o2 sensor after the catalytic converter, therefore two o2 sensors on each side for a grand total of four. They are titled as such:

Left side 1:1 refers to the o2 sensor above the catalytic converter also known

as the upstream sensor.

1:2 refers to the o2 sensor below the catalytic converter aslo known

as the downstream sensor

Right side 2:2 refers to the o2 sensor above the catalytic converter also known

as the upstream sensor.

2:2 refers to the o2 sensor below the catalytic converter aslo known

as the downstream sensor