Ok just had my o2 sensor replaced by the passenger side and check engine light is still on??? I had it checked at auto zone and that's what the problem said it was ! I unplugged my battery to see if that resets it and it does for about 15 minutes and check engine light comes back on ?? And suggestions

 

What's the actual OBD-II trouble code it stores?

 

Well it says bank 1 sensor 2 and I think the code is PO141 and at bottom it says
Possible cause
Faulty HO2S12. (Bank 1 sensor 2)
Poor connection at oxygen sensor
Check circuit-fuse

 

Did you replace the one after the cat? I believe that 'downstream' sensor is the correct one for a bank 1, sensor 2 code.

As far as I know, that's a pretty straight forward code.....

 

I don't know alot about cars but the one He changed the one that's by the passengers front right tire is that the one ???

 

To me, that sounds like he may have replaced bank 1, sensor 1 (aka - the wrong one).

 

Are you sure so where is the right one located exactly remember I don't know about trucks engineor do u have a picture of location

 

If he was at the passenger wheel well, that sure sounds like he replaced sensor #1.

Bank 1 = Passenger Side
Sensor 1 = Up near the exhaust manifold (aka - upstream of the cat)
Sensor 2 = Just past the cat (aka - downstream of the cat)

 

Yeah I agree, sensor 2 should be post-cat. Normally they're numbered in order that exhaust flow would hit them.

 

Ok I found the problem the O2 sensor is gone ill try to post the pic what you see is just that and only that

 

Yep - That would trigger a trouble code alright. lol

Did you check to verify that it didn't just come unplugged? Or is the actual exhaust bung empty?

 

Yea it's empty the person that did the welding and rigged it up quickly and unprofessional didnt take time to put the rest on

 

Wow!

Well, hopefully that will clear it all up!