HI Loren !
Thank you for your answer, i've talked today with porsche center and the guy there told me that i could be the low octan fuel ( 95 ) that i drove on,
now i have erased the fault in the log and filled up the gas with shell V-power instead.
i have been out for a test run for an hour now and now sign of fail indication.
could it been that the oxygen sensor only responded to the low mix of fuel ?
do ypu thing that i should put one of those redline fuel cleaners in the tank to really clean the oxygen sensors ?
by the way , the gt3 only has one O2 sensor, what i could see.