The error doesn't tell you which one (what fun would that be?). It's the
power transistor built into the coil that usually fails. When it does it
shorts, so measure resistance between pins 1 and 2 of each coil.  If one
of them is near zero, that's the one. It could be some other things like
bad connections, failed HV boots, etc, but ohm out the coils first.

-jim

Hi Welcome to bad world of maxima. I own a 99 maxima too and had same
problem. Dealer asked me to replace all six charging $100 each and also
$100 for installing them. So I bought those but installed myself only 3 of
them and it worked fine and check engine light is gone. So I still have 3
new genuine nissan ignition coils and I can sell it to you for $65 each +
shipping. Who knows I may need 3 more later myself but I will take the
shot. My loss ($35 +tax each)is your gain!. Contact cee_75@yahoo.com if
interested.