The gas engine has one before the catalytic converter.
2
2
1995-1999 3.9L, 5.2L, and 5.9L Dodge Ram 1500 has two O2 sensors. One upstream (before cat) and one downstream (after cat).
The only o2 sensors are on the passenger side on this year Ram.The only o2 sensors are on the passenger side on this year Ram.
OneOne
TwoTwo
There are 3 oxygen sensors and all 3 should be changed for the best performance and fuel economy. ON THE 1995 Ram there is only one O2 sensor on the cat
Either sensor can fail.
Yes, one up and one downstream.
1985 to 1995 have 1 1996 on up have 2
should be front and rear of the catalytic converter....
two, one before and one after the catalytic converter