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Quick update: BMWna has been silent on this case so far. We have driven about 2500 miles since picking the car up. The mileage is down some from about 23.5 to 21.7 at best. Most of the time it hovers around 21.5.
Pulled the codes on it today and without a service engine soon light we have a code 474C. This seems to be a pressure sensor before the DPF. Not certain on that yet.
The Mode 6 data shows it in the yellow zone for secondary air monitoring system. Basically it just about to set a code of some type soon.
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08-14-2013, 01:01 PM
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