nycgps

iTrader: (1)

Well if your car is fine after the swap, then you're good to go.

r0tor

iTrader: (1)

if that was the case, i'd be asking my scan tool vendor why your not showing the rotor 1 and rotor 2 misfire CELs since obviously your car was misfiring...

RxJaye

iTrader: (2)

The ecu has coil fault detection, it is OBDII mandated. Any code with a "0" before the 3 digit code is mandated like a P0353... There can be a fault that is not detected by that moniter and still be a fault and not set a light. The MIL or as you guys call it the CEL codes only point you in the location to start looking for the problem.

nycgps

iTrader: (1)

but if he has Coil failure, he should see misfire as well (or even before his coil were dead)

thats the part Im wondering.

RxJaye

iTrader: (2)

not always, remember there are 2 plugs that fire. There might be light spark but no mis-fire

Aseras

I had the same codes, but it was because i had got water in the bottom 2 spark plug wires, and the connectors/tips of the spark plugs were corroded to hell.

RxJaye

iTrader: (2)

That can make the PCM think an issue is with the coil

titaniumgr3y

the codes are saying: COIL # CIRCUIT so it is correct that you had the same code for your wires.
I ve changed all 4 coils, 2 of them, 351,353 first and third were very burnt,,, the other two, had only the big white bullet but not the 5-6 small bullets which the burnt had.
After the swap, all are ok, no codes, and the engine goes smoother.