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Fr0z3N 09-21-2012 10:51 AM

3 series not running right
323i pulled the codes yesterday and got

02 bank 1 out of control limit
02 bank 2 out of control limit
cyl 1 2 misfire
02 bank 1 something cant remember
02 bank 2 same as above
small fuel leak < 5mm
mass air flow

cleaned the maf and its running better but still not as before, pulled codes again today and got everything minus the maf code plus mis on 12346

any ideas as to what this can be? sounds like a sensor problem to me, could it still be the maf causing this

ScotcH 09-21-2012 10:53 AM

Well, the codes suggest it's the O2 sensors. SO maybe,I dunno, it's the O2 sensors?

Fr0z3N 09-21-2012 11:11 AM

I forgot to add the brake booster has a vaccum leak too could that have anything to do with it? unseen air by the maf?

Ceeker 09-21-2012 02:17 PM

fix by starting with the cheapest to the most costly. I'd take care of the vacuum leak then recheck codes. o2 sensors aren't uncommon.

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