P306A Diagnostic Trouble Code

P306A 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 P306A diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Dirty air cleaner element Damaged DPF

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P306A 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 P306A.

Fortunately, P306A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P306A Trouble Code For Specific Cars

P306A Honda Acura Slx Pressure Control Solenoid C
P306A Nissan Platina Cooling Fan Rationality Check Malfunction
P306A Toyota Gaia Oil Change Reset Button Circuit Failure
P306A Volkswagen Quantum RPM Input Circuit Failure
P306A Suzuki Cappuccino Memory 2 Switch Circuit Short To Ground
P306A Cisitalia 850 Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
P306A Mitsubishi Delica Audio Tape Deck Mechanism Fault