2000 Nissan Maxima GLE with CEL P1320

My Nissan Maxima 2000 is showing CEL with code of P1320 ONLY, and the car is running rough/or loss of power. The shop that checked for the code advised that it could be something related to Ignition, and also provided me with the system generated list of reasons for the code. Before I decide to do anything, I wanted to check what option I have to address this in a most cost effective manner:

  1. Is there a quick way to check which coil would have gone bad ?
  2. Is it advisable to change 1 LH and 1RH at a time, and see if it fixes the problem ?
  3. Could it be cam shaft sensor that could have gone bad ? Are there any symptoms of cam shaft sensor failure to isolate it to one way or the other ?

Would really appreciate to hear from you guys.

Nissan Issued A 2000 - 2001 Maxima TSB (Technical Service Bulletin) Septemer 6, 2001 To Help Their Technicians With Mil (CEL) On And DTC P1320.
There must have been issues with this.

It could help your mechanic.