1996 Carrera,
Reset the light, drive about 50 to 40 miles and back it comes. Porsche in New York has linked in to via internet from Fresno Ca. and can't figure it out. the code says 3&4 cylinders are misfiring, yet it runs smooth. Looking for suggestions? Replaced the gas cap, replaced spark plug wires and plugs with Porsche parts Ran fuel additive through the system. Recently it turned off while driving and 35 miles later came back on. Scheduled for the shop Dec. 9th, for more exploration. Seigfreid Automotive is the mechanic and they have been in business here since 1950's.