C2340 Diagnostic Trouble Code

C2340 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 C2340 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
Diminished fuel efficiency

Possible Causes :

Faulty IMRC actuator/sensor
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
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 :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C2340 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 C2340.

Fortunately, C2340 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2340 Trouble Code For Specific Cars

C2340 Mg Ex-e Air Suspension RR Air Spring/Shock Solenoid Output Circuit Short To Battery
C2340 Dodge 600 Ignition Coil B Primary Circuit Malfunction
C2340 Lanchester Ten Speed Wheel LR Input Signal Missing
C2340 Mercedes E 420 Accelerator Position Sensor Out of Range
C2340 Toyota Publica Park Brake Switch # 1 Released Circuit Short to Gnd
C2340 Chevrolet Omega EGR Metering Orifice Restricted
C2340 Jeep Cj5 Seat Driver Rear Up Circuit Failure