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p0430 and p0420

Tobbe Vågstedt

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Does anyone know if there is anything i can do to fix my problem

i've got these codes and the car has only 65000km and is an 2004

i understand that the problem is with the cat conversion banks 1,2, could it be because i filled it up

with unledded 95 instead of 98 ( i've only done that twice .....) ?

is there any major difference on 95 or 98....?

is there anything i can do instead of changing the cat's ?

/ Toby from sweden

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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.

looking forward for your response.

Thanks !



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