Trouble Code P1320 indicates Primary Ignition Circuit System Fault
If your Nissan Maxima exhibits one or both of the below symptoms:
- MIL "ON" with DTC P1320 stored in the ECM Intermittent spark knock (detonation)
The cause may be one or more of the ignition coils.
Possible causes
- Ignition coil primary circuit is open or shorted
- Ignition coil primary circuit poor electrical connection
- Faulty power transistor unit built into ignition coil
- Faulty ignition system condenser fault
- Crankshaft position sensor circuit fault
Nissan Maxima Fault Code P1320 Service Procedure:
Procedure For Check Engine Light (MIL) "ON" With DTC P1320 Symptom
- Check Trouble Code Scanner Results to confirm DTC P1320 (Ignition Signal Primary) is stored in the ECM. NOTE :Single or multiple cylinder misfire codes (P0300 - P0306) may be stored in the ECM with DTC P1320.
- Check the ECCS wiring harness for a broken or damaged wire.
- If the ECCS harness has a broken or damaged wire that is causing the symptom(s) noted above, repair the harness and verify the problem is resolved.
- If the ECCS harness does not have a broken or damaged wire and is NOT causing the symptom(s) listed above, proceed to step 3.
- Replace ignition coil(s) with ONLY OEM ignition coils (preferably from the dealer), and verify the problem is resolved.
