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Thread: S3 Bam post cat lambda sensor (S2) help

  1. #1
    mattyboy199's Avatar
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    S3 Bam post cat lambda sensor (S2) help

    My S3 has thrown up a sensor 2 fault (as below). So i intend to replace it, however i've been digging around on ebay & the bosch website. The Audi part number is 06A906262BB however the bosch website indciates 3 different sensors but does not indicate which sensor is post or pre. Has anyone had to replace this ? i'm pretty sure the same sensor is used on a number of cars & you shouldnt need to pay the £100 odd through a dealer.


    Chassis Type: 8L - Audi A3/S3
    Scan: 01,02,03,08,15,16,17,22,35,37,45,55,56,57,75,76

    -------------------------------------------------------------------------------
    Address 01: Engine Labels: Redir Fail!
    Controller: 8N0 906 018 BH
    Component: 1.8L R4/5VT 01 0001
    Coding: 10710
    Shop #: WSC 00000
    VCID: 78836BE34BCB

    2 Faults Found:
    17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
    P1114 - 35-10 - - - Intermittent
    17704 - Shareware Version. To Decode all DTCs
    P1296 - 35-00 - Please Register/Activate
    Readiness: 0000 0000

    cheers

    matt
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

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  3. #2
    <tuffty/>'s Avatar
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    This is post cat sensor and is narrow band... this is not the wideband pre cat sensor at the top of the DP...

    Can't help on part numbers sorry..

    <tuffty/>
    Last edited by <tuffty/>; 11th February 2013 at 22:36.
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

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    Scullies's Avatar
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    I know there is a difference between the plugs. Sensor under the car has a flat 4 pin connector and the one at the start of the downpipe as a kind of oval 6 pin plug.

    Sensor under the car I bought - 00 01 Audi TT Quattro Bosch Oxygen Sensor 06A906262BA | eBay


    Sensor at the start of the DP I bought - Bosch 17014 Oxygen Sensor | eBay

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    i'm confused....

    This lists the 4 wire but without the plug ? it refers to the part off ETKA 06A906262BB
    Lambda Sensor LC8335

    This lists the 4 wire with plug for the rear
    Lambda Sensor LP40320

    ETKA states the audi part number ending BB as behind the cat
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

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    Scullies's Avatar
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    get the one with the plug, you dont want to waste time trying to solder and seal wire joints.

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    oh yeah i'll defo go plug just need to check all the wiring is good. Tuffty has really confued me with his post S2 is sensor 2 post cat, why would the post cat sensor be at the top of the down pipe ? its after the cat
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

  8. #7
    <tuffty/>'s Avatar
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    Quote Originally Posted by mattyboy199 View Post
    oh yeah i'll defo go plug just need to check all the wiring is good. Tuffty has really confued me with his post S2 is sensor 2 post cat, why would the post cat sensor be at the top of the down pipe ? its after the cat
    Sorry dude... my bad... I meant pre cat... brain frazzled after a long day at work...

    Edited for clarity (hopefully lol)

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

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    Quote Originally Posted by <tuffty/> View Post
    Sorry dude... my bad... I meant pre cat... brain frazzled after a long day at work...

    Edited for clarity (hopefully lol)

    <tuffty/>

    I think you need to change the 1st pre to post unless i'm wong ? and co nfused again
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

  10. #9
    <tuffty/>'s Avatar
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    Quote Originally Posted by mattyboy199 View Post
    I think you need to change the 1st pre to post unless i'm wong ? and co nfused again
    DOH!!! (edited...again...)

    I'll get my coat....

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

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    mattyboy199's Avatar
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    cool all makes sense now thanks !
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

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    Yesterday i removed the sensor the head of the sensor was black with soot & it justed wiped off, ive re-installed the sensor & cleared the fault code and it seems to be fine now. Very susprised about this but we will see
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

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    Vwdan80's Avatar
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    I have just replaced the rear sensor on mine with a genuine part, I have the part number at work and can post it tomorrow if ya want
    2002 s3 silver, BAM, lcr Brembos ds2500 pads, Braided hoses, forge 008 dv, stack boost gauge, power flex dog bone bush/wishbone bushes, forge boost hoses, B5 tip, B5 remap, toyo fmic

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    Quote Originally Posted by Vwdan80 View Post
    I have just replaced the rear sensor on mine with a genuine part, I have the part number at work and can post it tomorrow if ya want
    Is it easy to do the post cat lambda? Just ordered one from Bosch so intend to do it tomorrow or weds after work.. I'm guessing it's just the heat shield in the way? Haven't had a proper look yet to see if I can get at it!

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    I replaced the b1s2 sensor on mine 2-3 months ago with a NGK one off ebay, much cheaper than the bosch ones, it's still early but not had any probs with it touch wood.

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    Quote Originally Posted by BenJee_S3 View Post
    Is it easy to do the post cat lambda? Just ordered one from Bosch so intend to do it tomorrow or weds after work.. I'm guessing it's just the heat shield in the way? Haven't had a proper look yet to see if I can get at it!
    Already had mine out, the heat shield isnt in the way, you cant miss it tbh. I would suggest spraying it up 24hrs before with wd40. I just used a spanner & hammer which eventually freed it up. Still yet to replace mine trying to cure a misfiring issue first then gonna clean it up see how that pans out.
    BenJee_S3 likes this.
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

  17. #16
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    Quote Originally Posted by SoljahofSensi View Post
    I replaced the b1s2 sensor on mine 2-3 months ago with a NGK one off ebay, much cheaper than the bosch ones, it's still early but not had any probs with it touch wood.
    well luckily I work at CAS so I get Bosch and NGK lambdas at cost

    Quote Originally Posted by mattyboy199 View Post
    Already had mine out, the heat shield isnt in the way, you cant miss it tbh. I would suggest spraying it up 24hrs before with wd40. I just used a spanner & hammer which eventually freed it up. Still yet to replace mine trying to cure a misfiring issue first then gonna clean it up see how that pans out.
    ah good, yeah ill soak it before hand then and have a whack tomorrow thanks for the speedy replies

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    mattyboy199's Avatar
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    Quote Originally Posted by BenJee_S3 View Post
    well luckily I work at CAS so I get Bosch and NGK lambdas at cost
    Does that mean you could source one for me @ cost for all the friendly advice ;-)
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

  19. #18
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    Maybe not at cost but definitely cheaper than standard trade!! I'll get a price for you tomorrow post cat lambda same as mine right?

  20. #19
    mattyboy199's Avatar
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    yep post cat with the 4 pin connector
    2002 Dolphin grey S3 - Sym2+bose, heated leather, ally mirrors, R32 ARB's with superpro, Jabba stage 2 map, TFSI coils, Samco TIP, Forge DV & privacy glass

    2010 Green Kawasaki Ninja ZX6R - Akrapovic baffleless race can, LED cluster & HID's

    wanted for 8L S3:
    Unmarked grey rear bumper panel
    Milltek system

  21. #20
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    No worries I'll get you a price tomorrow

 

 

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