My Service engine light is on I replaced my ignition coils twice it will not pass emissions, the code P 1320 keeps coming up
Did you use OEM ignition coils or aftermarket?
The guy said that they are aftermarket but are built to OE soecifications
Make sure the wires are connected in the the right order. If they are not you will get the error you describe.
Nissans are very sensitive to aftermarket ignition coils.
Check the wires first. Make sure they are not swapped.
Once you verify the wires, swap one of the OEM coils with the aftermarket one. If the code moves with the aftermarket coil, you found your problem.
If not, you have a wire harness problem or bad ECM.