Hi, I just replace my catalytic converters and downstream o2 sensor bank 1, and now I am getting a p2096 code fuel too lean bank 1.
Thanks for any help.
Sunday, November 18th, 2018 AT 7:28 AM
17 Replies
ASEMASTER6371
MECHANIC
52,797 POSTS
Good morning.
What brand O2 sensor did you use?
Did you check for any exhaust leaks after you replaced it?
Roy
Image (Click to make bigger)
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-1
Sunday, November 18th, 2018 AT 7:52 AM
DXERSQUEST1
MEMBER
12 POSTS
Just found a bit of a leak at the threads of the o2.
Was this
answer
helpful?
Yes
No
Sunday, November 18th, 2018 AT 7:54 AM
DXERSQUEST1
MEMBER
12 POSTS
The o2 is a NTK.
Was this
answer
helpful?
Yes
No
Sunday, November 18th, 2018 AT 7:57 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
Check the harness for any damage or burned wires.
The leak can cause the code. Repair the leak, clear the code and retest.
Roy
Was this
answer
helpful?
Yes
No
Sunday, November 18th, 2018 AT 8:02 AM
DXERSQUEST1
MEMBER
12 POSTS
Okay will give it a try.
Thank you
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, November 18th, 2018 AT 8:07 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
You are welcome.
Always glad to help.
Roy
Was this
answer
helpful?
Yes
No
Sunday, November 18th, 2018 AT 8:13 AM
DXERSQUEST1
MEMBER
12 POSTS
Hi Roy, can an exhaust leak after the downstream o2 say a foot or so trigger the p2096 code?
Was this
answer
helpful?
Yes
No
Saturday, November 24th, 2018 AT 9:55 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
No, it would affect it if it was before the sensor.
Roy
Was this
answer
helpful?
Yes
No
Saturday, November 24th, 2018 AT 10:08 AM
DXERSQUEST1
MEMBER
12 POSTS
Okay thanks.
Was this
answer
helpful?
Yes
No
Saturday, November 24th, 2018 AT 10:15 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
You are welcome.
Always glad to help.
Was this
answer
helpful?
Yes
No
Saturday, November 24th, 2018 AT 10:16 AM
DXERSQUEST1
MEMBER
12 POSTS
One more question. Would a lazy upstream o2 on bank 1 cause p2096?
The o2 is not cycling correctly.
Was this
answer
helpful?
Yes
No
Sunday, November 25th, 2018 AT 6:50 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
No, that is for fuel control. It is doing its job as that bank is running lean. Look for vacuum leaks, PCV valve and it could also be a partially clogged injector.
Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, November 25th, 2018 AT 6:53 AM
DXERSQUEST1
MEMBER
12 POSTS
I am just wondering. I did not get the p2096 until I put in the catalytic converters and Downstream o2.
Was this
answer
helpful?
Yes
No
Sunday, November 25th, 2018 AT 7:35 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
The downstream O2 sensor has only one job, it monitors the catalytic converter. It does not have any affect on fuel control.
Roy
Was this
answer
helpful?
Yes
No
Sunday, November 25th, 2018 AT 7:41 AM
DXERSQUEST1
MEMBER
12 POSTS
I understand that. I just got the code right after I replaced the senor and converter. Just wondering why.
Was this
answer
helpful?
Yes
No
Sunday, November 25th, 2018 AT 7:44 AM
ASEMASTER6371
MECHANIC
52,797 POSTS
I understand what you are saying.
Now that the converter is working, the one bank is running lean. Hard to say why without me being there to go over the car.