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Originally Posted by NY930
Wow, you guys really know your stuff. If knowledge is wealth, then you all seem quite well off.
Thanks so much for all your valuable input and advice.
I had the codes cleared so we will see if they reappear in the morning.
The battery terminals were loose and the battery may need to be replaced. I'll be charging up tonight. I just took delivery from Florida and the battery may have discharged in route.
Can a dead battery trigger a mis code?
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I wouldn't think it would be a battery issue but low batteries do play hell with Porsche electronics. I wouldn't expect the codes to reappear right away as the ECM is designed to cycle through X number of cycles for each code before they reappear and it is based on running time. I would recommend you get a manual and a Bentley's manual for your car and read up on how the ECM system works it will help you through this process. Keep in mind that codes typically point to a system and not a specific part and Porsche has a diagnostic tree to follow for each code to track down and identify what is specifically wrong. Some Porsche mechanics, even at dealerships, will shotgun replace entire systems, at great expense to you, instead of follow the diagnostic tree. It is one reason a lot of Boxster owners become DIYers or find a good mechanic they develop a relationship with who won't shotgun. When I had my SAS problems I had mechanics tell me I needed to replace the entire system, I had mechanics tell me it was the O2 sensors and cats that needed to be replaced, I had almost everyone tell me it was a bad MAF. As it was I spent almost $700 before I found a mechanic who took off the intake manifold and found a twenty five cent hose that had pulled off a diaphragm. He hooked it back up and bingo-problem solved, I've still got the original MAF, O2 sensors, cats and SAS with no codes and my Boxster just passed California smog with readouts much lower than what is allowed.