C3309 Diagnostic Trouble Code

C3309 is a kind of OBD-II Diagnostic C-Chassis 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 C3309 diagnostic trouble code may include:

If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Corroded or damaged connector
Reduction in engine performance, especially at low RPM levels
Malfunction Indicator Lamp (MIL) illuminated

Possible Causes :

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

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code C3309 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 C3309.

Fortunately, C3309 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3309 Trouble Code For Specific Cars

C3309 Lagonda 2-litre Shift Solenoid D Electrical
C3309 Innocenti 650 SCP (J1850) Invalid or Missing Data for Function Read Engine Torque
C3309 Holden Eh Persistent Misfire
C3309 Peugeot 407 EIC Switch-1 Assembly Circuit Open
C3309 Jaguar Xj6 Seat Driver Front Up Switch Circuit Short To Battery
C3309 Toyota Prius 4 Park Brake Actuator Assembly Switch Released Circuit Failure
C3309 Citroen C4 Aircross FTS High - Fuel Pump Temperature Sensor High