P320A Diagnostic Trouble Code

P320A 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 P320A diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
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

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P320A 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 P320A.

Fortunately, P320A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P320A Trouble Code For Specific Cars

P320A Mazda Axela Ii Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
P320A Ssangyong Stavic Lamp Headlamp Input Circuit Failure
P320A Daewoo Lacetti Gate Select Actuator Circuit Range/Performance
P320A Hanomag 2 Passenger Sliding Door Ajar Circuit Short to GND
P320A Oldsmobile Custom Cylinder 7 Misfire Detected
P320A De Tomaso Guara HPU (Hydraulic Pump Unit) Pressurisation Failure
P320A Adler 14 ABS Inlet Valve Coil RR Circuit Failure