Black CSL from France

[Olive]

Thanks all for your reply !
During my last service checking I asked for a diagnostic test due to this light. The message was not in "memory". The light was not visible when I drove the car to this garage (but the day before it was) and the light appeared again just 5 minutes after this diag test...
@Adem : thanks a lot for your proposition, but I am a bit far from London :-)

@Shimmy : I heard that there were several lambda sensor. The "post cat 02" is the sensor that everybody changed here ?

Is there a reference of this piece available ? May be I could order it directly on internet.

[Olive]

@Adem : do you know the reference of the lambda to order ? I mean...the one everybody here changed :thumbs:

[Neil M]

There you go Olive:BMW: 11 781 405 324, or Bosch: 0 258 003 771, I think these are correct for the after cat.

[Olive]

Once again Neil : artyman::-D
I got it : http://www.oscaro.com/sonde-lambda-b...5-21472-3922-p

Is there some special difficulties to replace it ? May be there is already a thread on this topic ?

[Olive]

i Found the ETK concerning this reference but there are 2 Sensors, one by cat. Why only one of both seems to be impacted by this problem ?

[sjb]

I think I'm right in saying there are 4 in total. Two pre cat and two post cat. The two post cat are easy to get at and remove, the two pre cat ones are very difficult to get to, they are in the downpipes in the engine bay and accessed from below. BMW recommend getting them replaced in pairs, ie replace both pre or both post cat sensors for perfect running. I got all 4 replaced free of charge though :supz:

[Olive]

I think I'm right in saying there are 4 in total. Two pre cat and two post cat. The two post cat are easy to get at and remove, the two pre cat ones are very difficult to get to, they are in the downpipes in the engine bay and accessed from below. BMW recommend getting them replaced in pairs, ie replace both pre or both post cat sensors for perfect running. I got all 4 replaced free of charge though :supz:

It means i better should order both.ok. But it means also it could be not 1 or 2 but maybe 4 references to replace... Not the same thing :-(

[sjb]

Correct! Which is why BMW changed all 4 on my car to be sure!
Great for me as it was on warranty but not good if you are paying for them :bigcry:

[Olive]

I will probably change it by pair in two times to check the result. I will start by the post cata ones to test. Its seems that you all have problems with these ones first.
I am waiting for a OBD2 test from a friend to be sure before ordering the part.

[CSLScot]

Lambda sensors do tend to fail about the same time & the general recommendation (for any vehicle) is to replace them in pairs. Not cheap for 4 of them!

[Olive]

Thanks for your reply. I will proceed by pair :moan:. Strarting by the post cata.

[Loaded_csl]

Black beauty.! Your car looks gorgeous. Welcome aboard :smt023

[Olive]

Thanks ! :notworthy:
This forum is really cool.

[Olive]

Hi mate you should get it put onto a diagnostics machine first find the fault coded.if you want or need help with this or mot in north london I could help you.

Some news. I made an A/C refresh today and asked to the garage to checking the MIL problem. They did not saw anything on the diag (it was not a BMW garage). I bought 2 days ago a diag EML327 and tested it when I came back. Nothing for me neither, BUT, something is strange when I look the analysis.
Very few lines of the check list are supported. Maybe 3 lines on the 35/40 available are "supported".

Then I think that if those machines are not able to check it ... they can not find the trouble. Could it be link to the Alpha Numerical settings of this car ?

[Olive]

I finally bought a BM Technic device, received and installed today. Very good program !

I think I can confirm my problem of lambda sensor...but probably all 4 (before and after the catalyser) :



Do you know where I could find a clear definition for each code related to the pieces to replace ?