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Thanks for the welcome Rick.
Yes, I did clear the codes after each trial. First was the PO151 O2 sensor for a new one. Cleared codes, came back after that 10-15 minutes of driving. Next was really checking as much as I could for harnes failure, air filter is very clean, washed MAF with warm water, let dry, cleared codes, came back same amount of time and same codes.
This is my 3rd Boxster and I have a data logger, but my buddy lost the cable. I have another cable on order now.
Cats have 100k miles on them......but you'd think I'd be pulling the high temp on the O2's, not the low temp?
Plugs and terminals look clean.
Could be a MAF still?
Oil seperator?
I also have my brake wear light on with 4 new sensors. I'm a little concerned there is a harnes issue. I haven't checked it all for sure, only a few parts that pass through something. I'm hoping someone else has had this failure and can chime in with some good ideas where to keep looking.
-Dan
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