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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 10-20-2005, 12:45 PM   #1
ArtDMSU
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CEL number and help?

I have a set of technik headers and I am not running any cats. About 2 weeks after the install my car started to permanently run in limp mode and it go annoying, so yesterday I bought a scan/reset tool and I am just looking for a comfirmation to what the code means. I ran a p0040 and the scanner read: 02 Bank 1 sensor 1 signals swapped with 02 Bank 2 sensor 1.

I am assuming that this means that the first pre-cat o2 sensor is swapped with the other pre-cat o2 sensor. Anyone else know? Or could this mean something else? Thanks
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Old 10-20-2005, 04:42 PM   #2
Ivegotissues666
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Quote:
Originally Posted by ArtDMSU
I have a set of technik headers and I am not running any cats. About 2 weeks after the install my car started to permanently run in limp mode and it go annoying, so yesterday I bought a scan/reset tool and I am just looking for a comfirmation to what the code means. I ran a p0040 and the scanner read: 02 Bank 1 sensor 1 signals swapped with 02 Bank 2 sensor 1.

I am assuming that this means that the first pre-cat o2 sensor is swapped with the other pre-cat o2 sensor. Anyone else know? Or could this mean something else? Thanks
Could be Possible did you/someone else just change your precat 02's just make sure they are plugged in correctly to the right plugs
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Old 10-20-2005, 06:10 PM   #3
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You're running headers with no cats and still have O2 sensors installed???????????
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Old 10-21-2005, 10:16 AM   #4
ArtDMSU
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Quote:
Originally Posted by hummer
You're running headers with no cats and still have O2 sensors installed???????????


Yeah I did not know of any other option. Today I am installing a simulator from baker electronics that will fake an okay signal from the post 02's.
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