C3379 Diagnostic Trouble Code

C3379 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 C3379 diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code C3379 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 C3379.

Fortunately, C3379 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3379 Trouble Code For Specific Cars

C3379 Volvo V90 SCP (J1850) Invalid or Missing Data for External Lamps
C3379 Opel Corsa B Decklid Release Circuit Short To Battery
C3379 De Dion Bouton Doctors HO2S Insufficient Switching Sensor 1
C3379 Fiat 1900 Lack Of HO2S21 Switch - Sensor Indicates Lean
C3379 Alvis Tc Air Suspension Compressor Relay Circuit Short To Battery
C3379 Maybach Exelero Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure
C3379 Bmw Serie 3 Clutch Position Sensor Circuit Low Malfunction