Does anyone know what a P1320 code means? It relates to ignition problems, according to the tester, but car is running fine. My service engine soon light came on this morning and I had the code reader run at Auto Zone but they only have codes up to about 600, beyond that is proprietary to Nissan so they can take your money instead of fixing it yourself. I'd guess it relates to one of those notorious ignition coils but the engine isn't missing at all.