po355 code
 

hey guys i have a 2004 mach 1 and last night i did a little power brake burnout and all of a sudden it threw an engine light code. it runs fine, no misfiring, oil is good, so i took it down to autozone and it scanned that i had a po355 code..ignition coil primary circuit condition #5. so does that mean my coil on spark plug 5 is bad? if it is bad, how would powerbraking effect the coil? i bounced rev limiter about 2 times and then just kept it steady at about 4,000 rpm.

well i looked at all the spark plugs and one of them there was orange all over the place under and around the coil and when i took the boot and plug out its like a orange powder. any ideas?

is the orange powder on cly 5?

well its the plug that is on the passenger side closest one to the firewall.