I brought my 2001 Infiniti QX4 to the dealership because I got the Service Engine Soon Light on. It is the code P1320, for a fault in the Ignition Coil System, and the tech just reset the check engine light.

They said it is most likely the coils (which I hear are the problem in a lot of maximas with the same VQ35DE engine) which is either $174 for one coil, or replacing all six for $757. The computer does not tell which one is faulty, if at all.

Any *cheaper* solution or reason why I am getting this code? I didn't want to pay $757 off the bat until I get some more feedback.

I'm pretty sure it was a misfire because when it happened (twice in 10,000 miles) the car started shaking like the pistons were out of sync (or something like that....).