Quote:
Originally Posted by JFP in PA
It is correct, I have the Boxster factory OBDII service manual in front of me, on a 7.2 1128 and 1130 are the same codes for opposite banks which states, "fuel/air mixture is so rich that sensing is up to its limits attempting to lean it out", with probable faults of a leaking injector or fuel pressure being too high. The same two codes on a 5.2.2 DME states "fuel/air mixture is so lean that sensing has reached its limits attempting to richen" , with probable faults of an intake leak or low fuel pressure.
Stuff like this is why I caution people about making sure they have all the supplements for Porsche service manuals as the same codes can mean something completely opposite depending upon year, model, DME version, etc.
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Porsche Boxster service bulletin no. 9/00 1715, dated 12/22/2000, speaks to a potential cracked oil filler hose problem on 1997-2000 Boxsters. It lists the codes that might be experienced "as a result of the incoming secondary air" with a DME 7.2 as P1126, P1128, P1130 and P1133 (and with a DME 5.2 as codes P1123 to P1130).
Again, I can only speak to my own situation. Since I corrected the vacuum leak and cleared the Codes P1128 and P1130, they have not returned.
Of course, the true original source OBDII manual is the German version. Is there a German-speaking mechanic out there who has access to the German version to verify the translation?