Which 02 sensor is Sensor 1 Bank 1?

[PUR PONY]

Last time i climbed under the truck and unplugged them one by one to see which went dead.... but figured i would ask if anyone knows off the top of their head.

Which 02 sensor is Bank 1 Sensor 1?

I keep getting a check engine light with code 133 (slow 02 sensor Bank 1 Sensor 1)... I need to take the truck through emissions before april 27 and the readiness codes are not completing because of the slow sensor.

thanks

 

[jremington59]

That would be the passenger side, closest to the manifold.

 

[sidneyhop]

Im getting error code P0156 02 sensor circuit malfunction. Bank 2 sensor 2.

So by the previous response Im guessing this is the drivers side furthest away from the manifold. Is that correct?

Oddly Ive noticed a little more power when I accelerate. Think this is caused by the bad 02 sensor?

Thanks in advance.

 

[PUR PONY]

correct, drivers side rear sensor.

here is a hint... if you cant see or get to it from the bottom, remove the center console and there is a access cover in the top of the tranny tunnel.

 

[sidneyhop]

correct, drivers side rear sensor.

here is a hint... if you cant see or get to it from the bottom, remove the center console and there is a access cover in the top of the tranny tunnel.

Great, thanks for the info. I just read the whole thread on removing the console posted by Turdle: http://www.explorerforum.com/forums/showthread.php?t=209770

In that thread someone mentioned that bank 2 is easier to get to from underneath. Ill check as soon as it cools down.

 

[PUR PONY]

it very well may be. I dont recall which ones you need to get to from the top and which ones from the bottom. Good luck, also an 02 socket comes in very handy!