C3751 Diagnostic Trouble Code

C3751 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 C3751 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code C3751 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 C3751.

Fortunately, C3751 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3751 Trouble Code For Specific Cars

C3751 Vauxhall Signum Pressure Control Solenoid C Control Circuit High
C3751 Bmw Serie 6 Clutch Solenoid Circuit Malfunction
C3751 Dodge Journey Ignition Cylinder Sensor Circuit Failure
C3751 Lagonda 2.5-litre Shift Solenoid D Control Circuit Range/Performance
C3751 Chrysler Voyager Exhaust Pressure Sensor Range/Performance
C3751 Steyr Type 220 Lamp Turn Signal Front Output Circuit Open
C3751 Cottin-desgouttes 12 Fuel Shut Off Solenoid Malfunction