P323A Diagnostic Trouble Code

P323A 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 P323A diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Faulty IMRC actuator/sensor

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P323A 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 P323A.

Fortunately, P323A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P323A Trouble Code For Specific Cars

P323A Datsun Skyline HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P323A Ferrari Enzo Interior Scanning Sensor Circuit Failure
P323A Fageol Fageol Injector Circuit Malfunction - Cylinder 10
P323A Mazda Cu-x Transmission Transfer Case Disengaged Solenoid Short to Battery
P323A Citroen Light 15 Fuel Pump Driver Module Off Line
P323A Yes! Clubsport SCP (J1850) Invalid or Missing Data for Throttle
P323A Austin 7 Autolamp Delay Circuit Short To Battery