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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


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?

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