This code is a crapshoot. There are two main things it could be and they are both expensive. There could be wire breakage in the engine .
4th Generation Maxima (1995-1999) – 1999 Nissan Maxima P1320 fault code – My 1999 Nissan Maxima GXE is posting a P1320 fault code.
4th Generation Maxima (1995-1999) – Completely frustrated……p1320 – So … had problems with AZ coils on nissan maximas for some reason.
My Nissan Maxima failed the smog check for high NOx and the Check Engine light on. The smog machine read Trouble Code OBD II P1320.
1999 nissan maxima 49000 miles V6 I had a check engine light come on with code P1320 random intermittent misfire. occasionally the car .
P1320 – Ignition signal – circuit malfunction (Nissan) … (arrowed) of the ignition coils on a V6 Nissan Maxima engine. … 1999 infinity i30.