P1312 2003 rodeo 3.2L and poor acceleration - 2003 Isuzu Rodeo

Get car fixed, that is what CEL on means, and codes mean.
if you want to learn car repair read the book?
are you asking for use to teach you 50 years school and experiences in a 3 inch text box. , really?
1312 just one code, and weak engine, misfiring or bogging ?
3.2L, 2 cams or 4, the 4 cam is 6vd1W engine.
Ignition current Sense System Secondary Line #2 Circuit, Confirmed
this engine has 6 COPS, (coils over plugs) so...
ever get a full tune up in last decade,?
bad spark plug #2
bad spark coil #2
for sure I dont know what engine you have, no photo of if
nor VIN code 8th digit telling me this key fact.
if you had, id be more accurate
left front coil bad or spark plug or omg the boot on it bad
$1.49 spark plug
$15 boot
$150 coil
the cheapone is the tune up part, what say do that first?

its a spark plasma code, the high voltage plasma is weak.
(fancy DTC this) like my jeeps have.