Get popcorn, long read.
A couple of months ago I started getting a CEL for code P2096 Powertrain - Post Catalyst Fuel Trim System Too Lean Bank 1.
The code could be cleared but would come back 2-3 weeks later. I believe after X amount of cycles.
I search about it and basically it came to an exhaust or vacuum leak. At the time the exhaust seemed fine and I wasn't really in the mood to chase a vacuum leak so, because there were no performance issues, I decided to ignore it and postpone fixing it till Spring.
A week ago, two more codes came up, P0138 Powertrain - O2 Sensor High Voltage (Bank 1 Sensor 2) and P0037 Powertrain - O2 Sensor Heater Control Circuit Low (Bank 1 Sensor 2). This was good as now I knew where the issue was and that most likely I only had to replace that sensor.
On Monday, wife calls... "the car sounds like our son's car" (he did a muffler delete). It didn't surprise me as I already had reasons to believe the exhaust could be on its way out. The big flange right under the dash area completely detached, right where the red line is:
Flex pipes (blue circle) lost the braided cover long ago (but are not leaking) so I thought on replacing this whole piece. My son suggested to take it to his muffler guy, to which him and many of his friends are frequent customers of, to see what else could be done. They offered to put a new flange for $60 CAD to which I could not say no. Too cheap to decline.
This fixed the noise and code P2096, the other two remain but should be easy to fix by replacing the sensor.
Started looking for the right PN to order and here is where the saga begins. By the end of 2014 Nissan switched many of the electronics so some 2015's got A and some other got B. With A and B not being compatible.
This is why many people that replace the AC compressor on a 2015 end having issues and then have to replace the auto-amp to fix it.
So, I need Bank 1 Sensor 2. Bank 1 is the one at the front, close to the radiator, some websites call it left. (Edited: Big error, see post #11)
Sensor 2 is the one after the pre-cats and its confusing as they call these catalytic converters but then also use that same name for the one that comes right before the flange. Some manufacturers will use the word upstream to refer to sensor 1 and downstream for sensor 2 and some will call sensor 1 the air-fuel ratio sensor.
This is what you encounter when you go to Rockauto:
NTK offers the same downstream sensor for either bank and state (OEM / Interchange Numbers: 226A04JM0B, 226A04LA1A, 226A0BV81A)
Denso offers a specific PN for downstream right (OEM / Interchange Numbers: 226A03YM0A, 226A04LA0A, 226A04LA1A) and left (OEM / Interchange Numbers: 226A04JM0B, 226A0BV80A, 226A0BV81A)
Walker and Bosch list a cut-off date of 09/2014, mine was built 11/2014.
Walker offers the same sensor for right and left if built after 09/2014
Went to a Nissan parts website attempting to clarify this and came to this diagram:
Which one is bank 1 and which one is bank 2? I am inclined to think that 22690NA is bank 1 as its matches the orientation of the pic of the PF in the upper right. Thoughts?
This is for 22690NA
and this for 22690N
According to my built date of 11/2014, I should need PN 226A0-BV81B (replaced 226A0-BV80A and 226A0-BV81A) or PN 226A0-4LA1A (replaced 226A0-4LA0A). Remember how NTK states that their part is a replacement for either one of these?
Denso says that their left replaces 226A0BV81A and their right one replaces 226A04LA1A.
At this point I'm convinced bank 1 sensor 2 is 226A0BV81B. I already ordered an Oxygen Sensor tool as its impossible to remove it with a regular wrench and I'm going to take it off it and see if I there is a PN on it.
I've replaced these on various vehicles and has never been this complicated.... always got Denso so most likely do that as well for the PF.
Here are a couple of pics of the offender:
A couple of months ago I started getting a CEL for code P2096 Powertrain - Post Catalyst Fuel Trim System Too Lean Bank 1.
The code could be cleared but would come back 2-3 weeks later. I believe after X amount of cycles.
I search about it and basically it came to an exhaust or vacuum leak. At the time the exhaust seemed fine and I wasn't really in the mood to chase a vacuum leak so, because there were no performance issues, I decided to ignore it and postpone fixing it till Spring.
A week ago, two more codes came up, P0138 Powertrain - O2 Sensor High Voltage (Bank 1 Sensor 2) and P0037 Powertrain - O2 Sensor Heater Control Circuit Low (Bank 1 Sensor 2). This was good as now I knew where the issue was and that most likely I only had to replace that sensor.
On Monday, wife calls... "the car sounds like our son's car" (he did a muffler delete). It didn't surprise me as I already had reasons to believe the exhaust could be on its way out. The big flange right under the dash area completely detached, right where the red line is:
Flex pipes (blue circle) lost the braided cover long ago (but are not leaking) so I thought on replacing this whole piece. My son suggested to take it to his muffler guy, to which him and many of his friends are frequent customers of, to see what else could be done. They offered to put a new flange for $60 CAD to which I could not say no. Too cheap to decline.
This fixed the noise and code P2096, the other two remain but should be easy to fix by replacing the sensor.
Started looking for the right PN to order and here is where the saga begins. By the end of 2014 Nissan switched many of the electronics so some 2015's got A and some other got B. With A and B not being compatible.
This is why many people that replace the AC compressor on a 2015 end having issues and then have to replace the auto-amp to fix it.
So, I need Bank 1 Sensor 2. Bank 1 is the one at the front, close to the radiator, some websites call it left. (Edited: Big error, see post #11)
Sensor 2 is the one after the pre-cats and its confusing as they call these catalytic converters but then also use that same name for the one that comes right before the flange. Some manufacturers will use the word upstream to refer to sensor 1 and downstream for sensor 2 and some will call sensor 1 the air-fuel ratio sensor.
This is what you encounter when you go to Rockauto:
NTK offers the same downstream sensor for either bank and state (OEM / Interchange Numbers: 226A04JM0B, 226A04LA1A, 226A0BV81A)
Denso offers a specific PN for downstream right (OEM / Interchange Numbers: 226A03YM0A, 226A04LA0A, 226A04LA1A) and left (OEM / Interchange Numbers: 226A04JM0B, 226A0BV80A, 226A0BV81A)
Walker and Bosch list a cut-off date of 09/2014, mine was built 11/2014.
Walker offers the same sensor for right and left if built after 09/2014
Went to a Nissan parts website attempting to clarify this and came to this diagram:
Which one is bank 1 and which one is bank 2? I am inclined to think that 22690NA is bank 1 as its matches the orientation of the pic of the PF in the upper right. Thoughts?
This is for 22690NA
and this for 22690N
According to my built date of 11/2014, I should need PN 226A0-BV81B (replaced 226A0-BV80A and 226A0-BV81A) or PN 226A0-4LA1A (replaced 226A0-4LA0A). Remember how NTK states that their part is a replacement for either one of these?
Denso says that their left replaces 226A0BV81A and their right one replaces 226A04LA1A.
At this point I'm convinced bank 1 sensor 2 is 226A0BV81B. I already ordered an Oxygen Sensor tool as its impossible to remove it with a regular wrench and I'm going to take it off it and see if I there is a PN on it.
I've replaced these on various vehicles and has never been this complicated.... always got Denso so most likely do that as well for the PF.
Here are a couple of pics of the offender: