E46Fanatics - View Single Post - solution: Check engine light w/ aftermarket Headers
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Old 08-12-2007, 12:29 PM   #18
Deep Blue
Join Date: Jun 2007
Location: Bay Area California
Posts: 451
My Ride: M52TUB28
Originally Posted by frobie15 View Post
I threw two codes on the way home from my girlfriends last night. Neither was for the catalytic efficiency below threshold. They were;

P1447 - Manufacturer Control Auxiliary emission Controls
P1190 - Manufacturer Control Fuel Air Metering

Any thoughts?
According to the Blentley P1190 is your Pre-Cat 02 sensor (bank1) going bad. Check the connector. Trying swapping the 02 sensors and see if the problem go away, stayed, or transferred with the swap.

p1447 is your emission control (ie Purge value or DM-TL Diagnostic Module Tank Leakage).
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