C2742 Diagnostic Trouble Code

C2742 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 C2742 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
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.
Faulty IMRC actuator/sensor

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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 C2742 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 C2742.

Fortunately, C2742 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2742 Trouble Code For Specific Cars

C2742 Shelby Super Cars Aero Intake Air Temperature Circuit Intermittent
C2742 Bmw M1 Clutch Actuator Circuit Range/Performance
C2742 Iso Lele SCP (J1850) Invalid or Missing Data for Remote Button Control
C2742 Ferrari 430 Intake Air Volume Circuit Malfunction
C2742 Renault Maxity Headlamp Relay Circuit Failure
C2742 Metrocab Ttt Air Suspension RF Height Sensor Circuit Open
C2742 Osca S Door Unlock Disarm Output Circuit Short To Ground