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Hi all Ok ok Omar Thanks you Not have good news This is my left catalytic, see picture This is the problem Thanks all for your comments Great forum, excellents members !!!

ok ok I understand Thks

I understand you perfectly, there may be something, a lamba probe perhaps that causes a rich mixture and fouls the spark plugs and then the error appears. I thought about it but then why don't more DTCs appear related to the probes for example or to the catalysts? we continue...

Do you mean swapping the spark plugs to see if the problem transfers to the other bank? Or at least exchange the most accessible spark plug to test, right? I think it's a good idea, I'll let you know... Thanks again !!!

Thanks for your quick response The previous owner changed the 8 coils 3 years ago, it is confirmed that they have been changed, they are Bosch but they have already been replaced I removed those three spark plugs and they had a lot of carbon, I cleaned them but although not so much, from time...

Dear sir, I have recently purchased a Maserati Coupe 2005 MY I have the same problem but wihout this DTC : P0152, 02 sensor circuit, high voltage bank 2 sensor 1 This DTCs: P0305 cylinder 5 misfire P0307 cylinder 7 misfire P0308 cylinder 8 misfire P0300 Random multiple cylinder misfire...