I have a check engine light code p0155. It says O2 Sensor, Bank 2 sensor 1. I am guessing the sensor 1 refers to the upstream sensor. Can anybody help me?

 

Passenger side, upstream.

someone correct me if i'm wrong, but i'm pretty sure thats it. The upstream ones are easier to pay someone to do. Downstreams aren't so bad

 

ya your right 01dakv686, i did all 4 of my sensors, took about 2 hours and the help of my a friend with small hands with a lot of PB blaster

 

yea, i have fat hands so it didn't work out so well for me. lol. My brother works for goodyear so a guy he works with said he'd do it for next to nothing and it took a lot less time then it took me to throw stuff at my truck. lol

 

haha your not the only one, thats why i chose working on tractor trailers instead of cars, my only problem when i did the sensors was getting my hand to the one connection by the distributor, otherwise i did most of the work myself

 

Thanks

 

Something that a lot of people don't know is that 9 times outta 10 you can look at the engine and tell which is which. The cylinder bank containing cylinder #1 (or bank 1) is always the side of the engine where the cylinder head is off-set to the front of the truck. This is true for almost any engine, any make, as long as it is a V-type engine