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1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.

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Old 02-15-2010, 09:07 PM   #1 (permalink)
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Question 95 E38 Lambda Control #1 Lambda Contro; #2

Hi, my check engine light comes on when my car is running rough. I am getting four codes. My Peake scan tool is giving me:
0D : O2 Sensor #1
0C : O2 Sensor #2
C9 : Lambda Control #1
CB : Lambda Control #2
My car runs smooth sometimes, and when it does for a long time, the check engine light goes off. Can the last two codes cause the first two?
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Old 02-15-2010, 10:31 PM   #2 (permalink)
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Lambda codes are set when the O2 correction goes out-of-range.

In cases, like this, I would train my sights first on checking the MAF, and checking for air leaks(loose clamps, cracked boots or disconnected hose) and checking for leaks also in the intake manifold.

Correct any faults, Clear the codes and RETEST.

With some luck, the readings can be brought within range and u won't need new O2 sensors although BMW does recommend u replace them every 50,000miles.

good luck.

Last edited by darkhorse737; 02-15-2010 at 10:36 PM.
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Old 02-16-2010, 02:44 AM   #3 (permalink)
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The o2 sensors have probably reached full adaption levels, reset the adaptions and see how it goes, I had one o2 sensor that reach the full level about every three months, in the end I did change it, it will affect your mpg.
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Old 05-11-2010, 05:42 PM   #4 (permalink)
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E38

I have the same problem ... I check all the boots and there. Good i change my 2. O2 sensors and still get the same thing... You guys think i need to change the catalyc converter????? That will be $$$$




Quote:
Originally Posted by Sugarmel View Post
Hi, my check engine light comes on when my car is running rough. I am getting four codes. My Peake scan tool is giving me:
0D : O2 Sensor #1
0C : O2 Sensor #2
C9 : Lambda Control #1
CB : Lambda Control #2
My car runs smooth sometimes, and when it does for a long time, the check engine light goes off. Can the last two codes cause the first two?
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