C2274 Diagnostic Trouble Code

C2274 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 C2274 diagnostic trouble code may include:

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
Faulty or damaged wiring
Hesitation upon acceleration
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)
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. 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.

Process Tips

Diagnostic trouble code C2274 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 C2274.

Fortunately, C2274 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2274 Trouble Code For Specific Cars

C2274 Mini One ASM Mode Circuit High
C2274 Monteverdi Hai Battery Power Relay Circuit Short To Ground
C2274 Skoda 1201 Key Line Voltage
C2274 Giannini 850 Oil Change Reset Button Circuit Short To Ground
C2274 Kaiser Special Seat Horizontal Motor Memory Position Out of Range
C2274 Fiat 508 Lamp Backup Switch Input Circuit Short To Battery
C2274 Mazda 818 Transmission Transfer Case Contact Plate Ground Return Open Circuit