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Originally Posted by Topless
Skip is right. You are running lean with 1128,1130 codes.
Maybe it's just poor translation from German to English but the description of these codes tells us the O2 sensors have detected a lean condition and the DME is trimming the mixture to add more fuel but has reached it's trimming limit (rich threshold). The wording is lousy but that is what it means. Bad MAF or vacuum leak are the most common causes when both right and left bank are affected.
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this is the case for these code definitions.. the translation is usually done a few ways:
1. germans who don't speak english too well..
2. americans who don't speak german too well..
3. or translators who know nothing about the context of the document...
all of which equal a loss of information.. sucks for sure...
I was workin' at a Techart place when the boxsters came out.. I was the only american there, and these guys had relatives that worked for Porsche. Needless to say, we got our hands on all the boxster manuals from Porsche.. all in german..
good thing I speak german.. the untranslated books were better than anything we could get in english back then..