C0272 Diagnostic Trouble Code

C0272 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 C0272 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
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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 C0272 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 C0272.

Fortunately, C0272 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0272 Trouble Code For Specific Cars

C0272 Royce 10 Hp Ignition Key-In Circuit Short To Ground
C0272 Nobel 200 Cylinder 1 Injector Circuit Low
C0272 Daimler Conquest Head Rest Switch Circuit Failure
C0272 American Wayferer Air Suspension LF Air Spring Solenoid Output Circuit Short To Ground
C0272 Sunbeam 12 MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER Aborted
C0272 Ultima Spyder Power Supply Sensor Circuit Short To Battery
C0272 Honda N Iii PWM Input Circuit Failure