Good day I was searching for an answer to this code P2320 I found 3 threads that are similar but not exactly what I was getting. I understand from
doing some research that this is coil 7 on the driver side. Just a quick back ground on what happened, I was at a red light when I noticed a burning
smell then a few seconds later I can see smoke but by the time the light turned green the smoke was gone. I didn't notice any issues while driving
home everything seemed normal. When I got home I popped the hood and I can smell like plastic was burning or something didn't see any. Long
story short I replaced coil 7 and the spark plugs thinking that would solve my issue but I am still getting that same code P2320 what else can it be?
How do I test if the wiring harness is good or not? Attached is how the coil and spark plugged looked

 

Running a Superchips tuner?

 

no not superchip the only thing that was done to it was put on a performance exhaust system and a CIA. those have been on for a month before my stop light incident.

 

Ok, I've seen ignition coil CELs with SC tuner performance tune on occasion. Thicker than stock wires fixes it. Try tracing wire harness all the way to PCM...

 

what am I looking for? Just a fyi I went to auto store and decided to buy a set of spark plug wires I replace the wire for coil 7 but still no luck. I figure heck I have new set of spark plug wires I might as well change my cables and spark plugs but I will go ahead and trace the harness all the way to the PCM and I will see what I can see. Thank you sir for the help thus far, much appreciated!!!!!

As a side note I don't notice any performance issues, I play b-ball on Sundays so I like to fill up before I go to my games. They gym is about 30 miles round trip and I don't notice any difference in gas consumption. I gunned it a few times and it takes off like normal, out of the 5 times I did it only once did it lag for 2-3 sec then it kicked it and took off. I went ahead and replace the coil 7 spark plug wire with a new one just go back racing a few folks and it behaves as normal. The guy at Auto Zone we were talking and I explained to him what I was seeing and he said that perhaps I have to go through 25 starts before it clears?!?!? That didn't sound right but we will see.

 

Look inside connectors for corrosion.

 

I looked at the spark plug wire before I swapped it out with the new one and both look the same. I also looked at the wire that connects to the harness that leads to the PCM and that too looks good, I was looking for any burnt or mis-coloration of any kind but didn't see any. I will snap a pic tomorrow perhaps I missed something. After all my work I would have to hate to bring it in but if I have to then I guess I will.