C2327 Diagnostic Trouble Code

C2327 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 C2327 diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Now, clear the codes and test-drive the vehicle to see if the code is reset. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code C2327 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 C2327.

Fortunately, C2327 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2327 Trouble Code For Specific Cars

C2327 Cadillac Model D Dim Panel Decrease Input Circuit Short To Battery
C2327 Toyota Picnic PAD Warning Lamp Circuit Short to Battery
C2327 Wanderer W SCP (J1850) Invalid or Missing Data for Ignition Switch / Starter
C2327 Tatra T600 Mirror Switch Assembly Circuit Open
C2327 Dodge Journey Ignition Cylinder Sensor Circuit Failure
C2327 Maserati A6 Transmission Fluid Pressure Sensor/Switch B Circuit Intermittent
C2327 Daf Marathon Gear Select position short to ground