i started having rough idling so i checked code and it said misfire number 5 cylinder so i replaced coil on 5. drove it got code for misfire cylinder 6 so i replaced number 6 coil. now when i start it , it runs rough and gives code po 356 ignition coil f primary secondary circuit malfunction. does anyone know what this is? i searched net by code title and a guy says he had this code and fixed it by a loose wire that was running to his fuel injector?? thanks for any help!

 

i am sorry, it is p0356 not po356