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 Chrysler Kew Evaporative Emission Control System Pressure Sensor Intermittent
C0272 Dkw Junior IDM Failure
C0272 Cadillac Esv Decklid Release Circuit Failure
C0272 Riley Mr Hydraulic Base Brake Failure
C0272 Mitsubishi Concept Audio Single-Disc CD Player Internal Fault
C0272 Porsche 964 Fuel Level Sensor B Range / Performance
C0272 Abarth Lancia A/C Compressor Temperature Sensor Malfunction