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Old 11-29-2012, 04:45 PM
QAfred QAfred is offline
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Location: Panhandle of Florida
 
Join Date: Aug 2008
Posts: 909
Mein Auto: 328i, 330ci, R1200C
Third digit of P code, #1 in your case, means air/fuel induction and both O2 sensors are sensing it (hence P1188 and 89 and not just one code) so you know it is not the oxygen sensors since both will not go bad at the same time.
It is something with air/fuel mix and my money says a new MAF will clear it. Do you know someone you can swap with to test my theory?

New MAF sensor cleared my P1188, P1189 codes on my 323i just a few weeks ago...but any air/fuel mix problem can give you those codes.

http://forum.e46fanatics.com/showthr...ighlight=p1188

http://forums.pelicanparts.com/101-p...89-1188-a.html

Also on one forum it was stated:
"I had the same codes on my 96 328i. Corrected them by swapping the O2 connections on top of the engine. Seems as if i connected them wrong when i changed out the old O2 sensors".

Last edited by QAfred; 11-29-2012 at 04:52 PM.
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