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    Question lambda sensor fault

    I'm after some help ive had a lambda sensor fault for a few weeks now so i went out and go to brand new ones but i keep getting this fault

    16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit
    P0130 - 35-10 - - - Intermittent


    can any one help please

    Thanks
    Tony

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    u cleared it mate? what car u got? did u change the pre-cat or post-cat lambda?
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    Quote Originally Posted by dany2k View Post
    u cleared it mate? what car u got? did u change the pre-cat or post-cat lambda?
    yh mate i cleared it then it comes about after about 10 mins of driving, audi s3 1.8 20v apy, i changed both mate thought it would be better to change the both at the same time

    Thanks

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    Quote Originally Posted by tufftybloke View Post
    i will trace all the wires back to ecu tomorrow if that helps i hope its simple

    Thanks

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    Quote Originally Posted by tony696 View Post
    i will trace all the wires back to ecu tomorrow if that helps i hope its simple

    Thanks
    Let us know how you get on, may save others from buying a new Lambada.

    DC

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    ive traced the wires back today back to ecu and there was no wire split, but ive found out my thermostat is faulty which i think that this is bring up my lambda fault due to thinking that the cars is still cold and adding more fault, because the way a lambda works is from the heaters in it telling the ecu is cold so it warms the lambda sensor up for it to get a reader ( think that's right ) lol

    i will try a new thermostat and cts in the next few days and let you know how i get on

    thanks

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    good man. you can probably save yourself 15 by having a look at the cts before you remove it: if it's green, unlikely to be the problem. i replaced mine unnecessarily recently, and then ended up changing the thermostat to solve my woes!
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    it is the green one but thought i would just change the both of them to be on the safe side :D

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    My Lambada Sensor started throwing up error codes shortly after having a new thermostat fitted. Iv bought a new Lambarda (Bosch) Pre-Cat
    and getting it fitted tomorrow.

    DC

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    Quote Originally Posted by DenCar View Post
    My Lambada Sensor started throwing up error codes shortly after having a new thermostat fitted. Iv bought a new Lambarda (Bosch) Pre-Cat
    and getting it fitted tomorrow.

    DC
    let me know how you get on mate

    tony

  13. #12
    Nilz's Avatar
    Defo worth the wait :)

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    I had a lambda sensor error come up today, i changed my sensor after the cat just before Xmas and the car was fine, but I did also just change my stat last week and the error came up today, just cleared and will see how it goes.

    How much was the pre cat lambda sensor??

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    Had the same problem when i changed my lambda B1 S1, had the same fault code thrown up, thought it was a wiring problem too, also at the same time it was due for the MOT test, cleared the codes and warmed the car hoping it would pass the emmisions but failed badly, i then thought i may have been sold a dud lambda by GSF they gave me a new one which kept giving the same fault.

    Well the solution i finally stumbled on while checking the MAF was To re-set the ECU by disconnecting the Battery for approx. 15 minutes, i believe this allows the ecu to re-adjust to the new lambda sensor and should stop your fault codes, Good Luck
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    Quote Originally Posted by tony696 View Post
    let me know how you get on mate

    tony
    Had new Lambada fitted today, error codes cleared, took car for a bit of a run and all is still clear, no engine light or codes except for the long-standing one of "Pressure Drop" etc etc, ill get this sorted next. The old Lambada looks like the original (2002) and the probe was black with heavy carbon deposit.

    DC

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    Nilz's Avatar
    Defo worth the wait :)

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    If disconnecting the battery for 15 minutes, will I need to put the radio code back ini and will any other settings be lost at all??

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    Windows will need resetting, just hold to the bottom then up again

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    and possible a throttle body aligment
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    the radio code will not need to be re entered as the radio is set to work with the car and a loss of power does not make it lose your cars configuration, but u will find the code in the owners manual fot the stereo.
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  20. #19
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    Defo worth the wait :)

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    Thanks guys about the throttle body alignment, hows this done, thru vagcom or is it the on off trick?

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    Defo worth the wait :)

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    Also, will this sort my economy out as well, as ever since I have had the boost leak I have had really bad economy, but since getting that sorted, it doesnt seem to have changed much, i was loosing as much as 100 miles a week!!

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    I think you will need vagcom for the TBA... or a liquid gauge if you have one

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    Nilz's Avatar
    Defo worth the wait :)

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    Cheers Dave

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    How did you lot get the sensor out? I tried last night to remove the post cat sensor but it wouldn't budge at all and there was 2 of us pushing the spanner! It's pretty difficult to get any leverage under a jacked car while laying on your front/back.

    I'm guessing one of these will make things a lot easier!:

    DRAPER 55540 LAMBDA OXYGEN SENSOR SOCKET 22MM 3/8" on eBay (end time 22-Mar-11 14:56:47 GMT)

    are our sensors 22mm???
    Last edited by Westy; 2nd March 2011 at 13:20.
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    22mm yes

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    Cheers Dave. Just got one from my local motor parts place. I'll try again now I hav the correct tool for the job.
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    Did you guys notice running problems with your lambda faults? Surging, hesitation or anything? Cheers

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    Westy's Avatar
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    Quote Originally Posted by loafofbrett View Post
    Did you guys notice running problems with your lambda faults? Surging, hesitation or anything? Cheers
    I dont have an error in VCDS but I am down on power and my diagnostics are pointing toward a faulty sensor or a faulty cat!
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    Most of the wring faults are due the the sensor not been protected from the exhaust manifold

    The sensors cam with a heat shield protector sleeve, I know mine doesn't one and thats why mine failed

    replace the sensor and fit a heat shield around it and the wiring
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    Quote Originally Posted by W3STY View Post
    I dont have an error in VCDS but I am down on power and my diagnostics are pointing toward a faulty sensor or a faulty cat!
    Can a post CAT lamda fault affect how the car runs? I thought a pre CAT lamda could but a post CAT couldnt? Did you get this fixed W3STY? Notice any improvements?
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    Quote Originally Posted by Cookstein View Post
    Can a post CAT lamda fault affect how the car runs? I thought a pre CAT lamda could but a post CAT couldnt? Did you get this fixed W3STY? Notice any improvements?
    Yes mate I got it fixed. It was the map (Chipped UK) that was causing the strange readings in VCDS. As soon as my ECU was flashed with Revo software it was fine.

    You are correct the post cat sensor doesn't adjust fueling and my power loss was down to my turbo having 3 huge cracks all the way through it
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    thanks, just had my EGT fixed and i also have a fault with the post CAT lamda that needs fixing (fault says the internal resistance is too high). any ideas how much the sensor cost and if it was an Audi one?
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  33. #32
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    Quote Originally Posted by Cookstein View Post
    thanks, just had my EGT fixed and i also have a fault with the post CAT lamda that needs fixing (fault says the internal resistance is too high). any ideas how much the sensor cost and if it was an Audi one?
    My sensor was fine and it wasn't throwing an error code. I checked the voltage of the sensor which is supposed to remain stable is the CAT is healthy but it was all over the place. As soon as I went Revo it was fine.

    Getting the lambda sensor out is a pain. I bought a proper Lambda sensor removal tool and even with 2 people twisting it we couldn't budge the thing. I've seen a few where they have siezed and people have had to have new ones fitted.
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  34. #33
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    I have had to resort to removing the DP to get the lambda in the vice to undo.
    split socket type tool spreads apart on v.tight ones.. no use at all
    i modified a ring spanner to cut a slot in it, which works 90% of the time, apart from seized ones where vice is required.
    22mm they are if you can get an AF spanner on it, but they round of easily
    heating the boss also can help undo them
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  35. #34
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    Evening gents.

    Just been to look at getting a new toy for the folks, a 2000 plate apx tt, supposedly have a blueflame exhaust, wak box with k&n air filter and a remap (remap is unknown and they reckon its running 280bhp which is b*llocks as ive driven it lol).
    Anyway the only fault code coming up is the lambda one, can this cause running issues, power loss etc?
    I ask as the tt didnt feel any faster than mine, it sat better (mine's still got knackered suspension so thats not hard todo lol) but it didnt pull better, it seemed to spluter and struggle.
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  36. #35
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    depends if it was the pre or post cat lamda
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    Would the code have indciatced which one it was?
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    yeah think so
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  39. #38
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    Quote Originally Posted by Dani_B19 View Post
    Evening gents.

    Just been to look at getting a new toy for the folks, a 2000 plate apx tt, supposedly have a blueflame exhaust, wak box with k&n air filter and a remap (remap is unknown and they reckon its running 280bhp which is b*llocks as ive driven it lol).
    Anyway the only fault code coming up is the lambda one, can this cause running issues, power loss etc?
    I ask as the tt didnt feel any faster than mine, it sat better (mine's still got knackered suspension so thats not hard todo lol) but it didnt pull better, it seemed to spluter and struggle.
    280bhp my arse!

    Does the APX have a post cat lambda?

    Check the fault code on ross-techs wiki and it should tell you mate. If it does have a post cat sensor then that sensor is there to report the condition of the cats, if they are knackered then the sensor will tell you and a nackered cat will give running issues.
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  40. #39
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    Thats what i said, will do mate, looks like the folks are going off it, seems like they are looking at a few others now, means i get a new toy to play with and also rob bits off haha.
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  41. #40
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    Ok.

    Looks like my pre-cat lambda sensor is shot (only got the 1 APY), thanks again to paul for scanning the car with full vcds, looks like my free version has been missing this.
    How easy are they to change? Whats involved on the wiring side of matters, is it a plug and play affair or do i have to start cutting and splicing wires?
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