engine light throwing a P2906 code

Discussion in 'SRT-8 6.1L Exhaust' started by kamiam, Jul 30, 2017.

  1. kamiam

    kamiam Member Military

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    engine light throwing a code P2906 code auitozone telling me that its a lean condition post cat...first is that true and 2nd that is telling (to me) that particular o2 sensor is failing or the cat is leaking...does that make sense?? also are there 2 different sensors(pre cat and post cat) or is there just 1 sensor for both?(yeah it came back)
     
    Last edited: Jul 31, 2017
  2. OrangeShaker

    OrangeShaker New Member

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    Are you sure that its not P2096 instead of P2906? I haven't located P2906 yet but P2096 is "Post Catalyst Fuel Trim System Too Lean Bank 1"
     
  3. kamiam

    kamiam Member Military

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    sorry I seem to be dyslectic :oops: you are correct P2096
     
  4. OrangeShaker

    OrangeShaker New Member

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    Here's a page I found that has a very detailed explanation of P2096.

    https://www.obd-codes.com/p2096

    I would also recommend doing a search for "P2096" in this forum as that is quite a lot of discussion about this code.

    Good Luck!
     
  5. kamiam

    kamiam Member Military

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    thanks, read the link you suggested, most of it did not match my situation but the sensor voltages might tell me something... this problem has reared its ugly head once again... I posted earlier about this situation here
    https://www.challengerforumz.com/threads/cracked-exhast-manifold.124982/
    also I followed a link from the page you suggested about OBD codes that talked a lot about the Pacifica as well as a bunch of things that could throw my code most of which doesn't apply to my situation,anyway I am unable to do any of the checks myself as I am disabled...was wondering if anyone has come across this problem with their car before I take in for further diagnosis...already had the stealer look at it once already../.they tried to seal the header to cat pipe connection and it worked for a couple weeks but now the engine light is back and throwing the same code again
     
  6. jklotz10

    jklotz10 Well-Known Member Member Relations MOTM Winner!

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    Bank 1 is the driver side exhaust on your car (or the side of motor where the number 1 cylinder is located).
    There are two O2 sensors on each side of your exhaust. One upstream (pre) and one downstream (post) of each cat. A bank 1 post lean condition means the downstream O2 sensor is reading a value that's not within specified parameters.
     
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  7. kamiam

    kamiam Member Military

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    correct from the links supplied that I read you are absolutely correct and those sensor readings are supplied to the computer that changes the lean or rich condition to the engine...those readings are anywhere from.02 volts to .045 volts from my memory of reading) for a normal condition... if those voltages go out of normal reading it will throw this code and the links supplied suggested many things that could throw a code which only a couple of which could throw this code for me...cracked manifold leaky cat or manifold to cat connection...the Stealer has already addressed the bad manifold to cat problem which worked for a couple of weeks but the engine is throwing the code again so I was wondering if someone has come across this situation before I take this car once again to try and diagnosis this pain in the a** problem I have
     
  8. kamiam

    kamiam Member Military

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    P.S. all equip on my car are stock...all connections have been checked (I have to ASSUME that when it was taken to the STEALER)except the header to cat connection of which they tried to fix and that one worked for the last couple of weeks and until I talk to the tech tomorrow I have to assume that they also checked those sensor voltages
     
  9. jkelly16

    jkelly16 The Semi-Bearded Wonder........ Administrator Moderator Forum Founder Site Supporter Level 4 MOTY Winner! MOTM Winner!

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    If you were having issues getting the header to cat to seal before, my money is it's leaking there again.
     
  10. kamiam

    kamiam Member Military

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    That's what I was thinking as well I'm just unsure...it was corrected for 2-3 weeks before the code reared its ugly head again... if it comes out to be this what do you think would correct it short of purchasing a new set of headers? UGGGG!!!! $$$$$
     
  11. jkelly16

    jkelly16 The Semi-Bearded Wonder........ Administrator Moderator Forum Founder Site Supporter Level 4 MOTY Winner! MOTM Winner!

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    If it's leaking again, the header & cat needs to be removed & inspected to see what the problem is and see if something needs to be replaced. Chances are they detected a leak and just loosened and wiggled things around and tightened back up to try and seal it. Really need to see exactly what they did the 1st time to correct it.
     
  12. kamiam

    kamiam Member Military

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    what they did was to put some kind of special sealant tightened everything up then ran it up and that was it... I drove for 2-3 weeks and then bank 1 started acting up again...I'm afraid they are going to tell me to me to replace the header/cat which are $800 for just the header OUCH!!!more than I can really afford:eek::(
     
  13. kamiam

    kamiam Member Military

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    well it seems to be intermittent...happened one day then disappeared. hasn't reared its ugly head since...will cross my fingers:confused:o_O
     

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