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Thread: B1 S2 ??

  1. #1
    A3 T's Avatar
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    Exclamation B1 S2 ??

    Hi guys

    I was driving along today and the engine light comes on.

    When i got home i did a scan and this was the only fault:

    16522 - Oxygen (Lambda) Sensor B1 S2: Signal too High
    P0138 - 35-00 - -
    Readiness: 0000 1000


    I've seen generic codes say Sensor 1 for the pre cat and sensor 2 for the post cat, And I've seen vagcom show bank 1 for the pre cat and bank 2 for the post cat.


    Can someone tell me what sensor Bank 1 Sensor 2 (B1 S2) is ?
    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

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  3. #2
    BENJAMIN's Avatar
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    You only have one bank as it's an inline 4cyl motor so ignore that part (b1), sensor 2 is the sensor behind the cat, sensor 1 is before the cat (nearest engine)
    '09 Lci 335d individual. M-dev stage 2, 360bhp 550ftlb. 'Undercover police edition'

  4. #3
    A3 T's Avatar
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    Thanks for that

    So my code point to the post cat sensor.
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    Mine was faulty, but it was mapped out after I took it to Badger 5.

  6. #5
    A3 T's Avatar
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    I changed both sensors just to be safe but I'm still getting this fault code with the eml on the dash.


    Any ideas ?
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    Tried clearing the code or driving it for a few days?

  8. #7
    A3 T's Avatar
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    Quote Originally Posted by vivalacoulter View Post
    Tried clearing the code or driving it for a few days?



    I fitted the sensors at a garage (so i could use the ramps) but we could only clear the codes with the generic reader so i drove home (no eml) and cleared the code with vagcom, I then did another 10 minute drive and as i still had the laptop with me i gave it another scan and the code was back.

    Later that day i was driving along and the eml come back on.
    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

  9. #8
    A3 T's Avatar
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    Anyone ?
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  10. #9
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    Thought you were "lord of the rings"?

    Clearly an issue with the replacement sensor, or the fitment.

    Not done a readiness test on the emissions system I assume?
    I quite often say I'm going to do things.

    Then never do them.

  11. #10
    A3 T's Avatar
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    Quote Originally Posted by 16Klappe View Post
    Thought you were "lord of the rings"?

    Clearly an issue with the replacement sensor, or the fitment.

    Still got a CAT I assume?


    Not done a readiness test on the emissions system I assume?


    I may have embellished a little...lol


    I don't think its the sensor as this is the third one I've tried (original one, known working second hand one and now a new one).

    Yeah the cats still in place.

    No I've not done a readiness test, ill try and give that a go tomorrow
    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

  12. #11
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    Any luck with the readiness test? May help point you in the right direction.
    I quite often say I'm going to do things.

    Then never do them.

  13. #12
    A3 T's Avatar
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    Quote Originally Posted by 16Klappe View Post
    Any luck with the readiness test? May help point you in the right direction.
    I managed to do a few tests today. This is what the readiness test is showing: And this is what I'm getting on the block 036 post cat o2 sensor control test: I wanted to do the block 046 cat test but i couldn't get the block 034 test to complete (you need to do this test first). After doing the tests i did another scan and a new code I've not seen popped up (as well as the other codes): 17545 - Fuel Trim: Bank 1 (Add): System too Rich P1137 - 35-00 - -Readiness: 0110 1001 Could this just be from doing the tests. Any ideas?
    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

  14. #13
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  15. #14
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    Sorry, I'm out of help.



    Ask Phil Miller.
    I quite often say I'm going to do things.

    Then never do them.

  16. #15
    A3 T's Avatar
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    Quote Originally Posted by 16Klappe View Post
    Sorry, I'm out of help.



    Ask Phil Miller.


    No probs, thanks anyway

    Who's Phil Miller ?
    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

  17. #16
    A3 T's Avatar
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    I'm still getting this error code


    Is there anything else that can bring this code up, like a dodgy MAF or N75?
    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

  18. #17
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    Check the wiring, a friend had some wires "burnt" by the exhaust heat, and the error code said it was a faulty sensor.

    If your wiring is okay, maybe your catalytic converter has passed away...

 

 

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