I recently had my o2 sensor replaced. My mechanic wasn't sure if it was bank 1 sensor 2 or bank 2 sensor 1. lets say I put a o2 sensor( bank 2 sensor 1) for in the bank 1 sensor 2. Would it affect anything?

 

The actual sensor part is the same, so it won't cause a problem. The only issue would be original problem not being fixed. That said, if your mechanic can't figure out which bank the sensor goes in I might think twice about him.

 

Still gonna have the same problem, just switch them vice versa till the problem is gone, your mechanic should know that...

 

thanks guys....I dont even know which one he did...i hate working with incompetent people.

 

Yet YOU took your car there, had work done to your car that you can't verify, yet you call him incompetent smh??

 

Okay
Bank 1 is the first 3 cylinders closest to to front of the car.
Bank 2 is the second set closest to the firewall.
Get under your hood and look at the bank1 part of the header.
Follow the 3 runners down to the first sensor that's bank1 sensor 1.

Immediately after that sensor is bank 1 sensor 2 some scanners will tell you if it's pre cat or post cat sensor that's not bad.most scanners will also read live data so you can physically see which sensor is bad which is the most accurate way to see which sensor is bad.

Now on bank 2 only sensor 1 is visible.bank2 sensor2 is under your passenger side floorboard.

Each bank has 2 sensors 1 pre cat and 1 post cat.so to answer your scenario.no you can not put b2s1 In b1s2 because one is post cat and one pre cat.different connectors.

Hope that clears it up for you.you should not go back to that mechanic,he should know all of this if he really is a mechanic.its simple common-mechanic sense. But good luck.try the DIY on 02 sensor replacement.

 

Thanks for the info hopefully I can get someone to check that for me because I do not have a scanner or any knowledge of working on a vehicle hence why I go to the garage for any work done to my car.

 

I assumed that if he could do a timing belt job he could change an 02 sensor. But when I ask him which part he needed me to order he sounded unsure and said to me " I guess it doesn't really matter because they all fit". And yes the CEL came back on. I didn't wanted to bring to the dealership since its I assumed it was going to be an easy job for a mechanic.