P1320 - FAULT CODE P1320 - OBD2

POST UPDATED IN January, 2021

P1320 Code failures by brands

P1320 INFINITI, NISSAN: IGNITION SIGNAL

P1320 BUICK, CADILLAC, CHEVROLET, GMC: IC MODULE 4X PULSELESS INTERMITTENT REFERENCE CIRCUIT

P01320 LEXUS, TOYOTA: IGNITER CIRCUIT MALFUNCTION 5.

P01320 AUDI, BMW: KNOCK SENSOR 2 CIRCUIT SHORT TO GROUND

Description of DTC code P1320

In vehicles with a spark plugless ignition system and without a distributor, each cylinder is equipped with an ignition coil. Each coil is attached to the spark plugs using a silicon cable or sleeve. The operation of these consists of a constant supply of battery voltage and a ground pulse from the Powertrain Control Module (PCM). This creates a high-intensity spark required to fire the spark plug in each cylinder. Other vehicles have ignition systems that use coil packs, in which multiple spark plugs are fired from a single coil pack.

Regardless of which ignition system the vehicle is equipped with, the PCM has the control to synchronize and monitor the spark operation. It uses input signals from the CKP (Crankshaft Position Sensor) and the CMP (Camshaft Position Sensor) to monitor spark timing.

The setting of the DTC code P1320 OBDII shows that the PCM found a malfunction in the primary signal of the ignition system. This voltage usually refers to circuits that deliver voltage to ignition coils, coil packs, and not to spark plug wires.

Symptoms of fault code P1320

  • The Check Engine lamp is on.
  • Misfiring.
  • Increased fuel consumption.
  • Other error codes related to power failures are set.

Causes of OBD2 P1320

The reasons for the configuration of the fault code P1320 OBD2 are

  • The primary or secondary circuit may be open or shorted.
  • An ignition coil or coil pack may be in poor condition.
  • The CKP Sensor or CMP Sensor may be damaged.
  • The system circuit may have a blown fuse or fuse link.

Possible solutions of the DTC code P1320

To solve the failures of the diagnostic code P1320 OBDII, you must take into account the following:

  • See the Technical Service Bulletins (TSB).
  • Scan to verify that there are no established fault codes related to the CKP or CMP sensors. In that case, you must diagnose those codes first.
  • Check all wiring and ignition coil connectors. If you find burned wires or corroded connectors, you should fix them
  • Use a DVOM to do electrical checks on the coils and their circuitry. If there is no voltage, it is due to blown fuses or a faulty relay. Make the appropriate corrections.

 

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