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      02-08-2013, 11:07 AM   #6
135Pats
Saving for a big ass turbo or an A3...IDK which.
 
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Drives: 135i
Join Date: May 2012
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Quote:
Originally Posted by AltecBX View Post
Thanks.
So are ppl suggesting these codes has to do with replacing the O2 sensors?
What about getting the BMS Downpipe Fix? Do you guys think this can fix the problem?
The first two codes mean your precat o2s are not reading correctly, which almost always means they're fried. To my knowledge, replacing the faulty part is the only way around that code. The DPfix is used by forum members to pass emissions testing, it is not advised to drive around with it on for long periods of time. If you are tuned the tune should have an autoclear mode that would get rid of the CEL from your catless downpipes, but that has nothing to do with O2 sensors possibly biting the dust. IF your precat O2s are bad, you need to replace them, there's no way I know of to cover up the issue.
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