Hi
I had a fault code P0155 which apparently is the front O2 lambda sensor for cylinders 2&3
which are cylinders 2&3 ?
I would have thought the first sensor would be for 1&2 and the second for 3&4, but what do I know.
I believe there are 2 sensors, as you look into the engine, one on the left and one on the right.
hope someone can help

thanks

What year of make?

hi
sorry, i just saw your reply
it is a 2001, but i am confused about a couple of things.
i bought a universal sensor from mister auto, and have since been told that the 2 sensors on the front are different, but I still don't know which one is the faulty one