Im just wondering why if cylinder 1 is on the drivers side but the cat is on the passenger side and the codes say bank 1 sensor 1, for the o2 sensor shouldn't it say bank 2 sensor 1?


idk maybe im just confused lol

Edit truck is a 96 with a 318

 

Because you have federal emissions, and only have one pre-cat O2 sensor. Therefore, bank 1 sensor 1...... If you had cali emissions, then you would have two pre-cat O2 sensors. The one on the drivers side would be 1/1, passenger side would be 2/1

 

Heyyou nailed it!

 

Ok thanks.
1 more thing when you say pre cat o2 sensor do you mean the one thats on the cat itself because my truck dont have one befor the cat it only has 1 on the cat and 1 after it.

 

Thatd be pre cat