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E39 M5 (1998-2003)

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  #1  
Old 06-27-2011, 03:55 PM
2002540i 2002540i is offline
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Location: Ontario, Canada
 
Join Date: Dec 2009
Posts: 28
Mein Auto: 02 540 M-pack 6spd
Engine Code

Hey,

I use my mechanics snap on scanner to check the engine light on my 2000 M5. I am getting an O2 sensor code, and then under Airco, I am getting "40 AUC Sensor"

Does anyone know what that code means? and how to go about getting rid of it?

Thanks
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  #2  
Old 07-26-2011, 06:27 PM
ard ard is offline
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Location: CA
 
Join Date: Jul 2009
Posts: 9,696
Mein Auto: '12 X5 35d/E39M5/996TTX50
1. Post the specific codes. If you have the Pxxxx codes post them, if you have the BMW specific codes, even better.

2.An O2 sensor code is not necessarily a bad O2 sensor... knowing the other codes, maintenance, etc is essential.

3. Do you have an M5 or an 540 Mpack?
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