P1320 Diagnostic Trouble Code

P1320 is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a P1320 diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon acceleration
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code P1320 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P1320.

Fortunately, P1320 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1320 Trouble Code For Specific Cars

P1320 Kia Picanto Ii Seatbelt Passenger Pretensioner Circuit Resistance Low on Squib
P1320 Chevrolet Trans Sport Enable Signal Open Circuit
P1320 Volvo Xc70
P1320 Dkw Sonderklasse Ignition Coil - Cylinder 2 - Early Activation Fault
P1320 Lotus 16 Torque Converter Clutch Circuit Stuck On
P1320 Kia Soul Ii Sensor Power Supply High Input
P1320 Nissan Stanza Cruise Control/Brake Switch A Circuit Low