What Does P0279 Mean? Regarding the P0279 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see P0279 engine fault code on your engine code reader this description will help you. engine code P0279P0279 fixobd P0279dtc P0279obd code P0279obd2 P0279P0279 car codediagnostic code P0279car code P0279check engine code P0279fehlercode P0279P0279 fiatcodigo P0279codigo falla P0279P0279 kody b??dówcodigo de falla P0279 What are the common causes of P0279 ? Most often, the cause of the problem can be traced to the #7 cylinder fuel injector itself, or in the electrical circuitry associated with it. A dirty or plugged fuel injector, or a faulty fuel injector, are common causes, although somewhat surprisingly, an electrical malfunction of one type or another is more likely to be the source of the problem. Electrical malfunctions can consist of either an open circuit or a coil-to-coil short in the fuel injector harness, a loose or corroded connector to the fuel injector control module (FICM), or a fault in the FICM itself. A faulty oxygen sensor is another, although somewhat remote, possibility as would be a fault in the PCM. The wiring harness to the PCM is rarely a source of the problem, which is a good thing since this harness can be hard to gain access to on most vehicles. How do you troubleshoot P0279 ? 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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Process Tips Diagnostic trouble code P0279 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 P0279. Fortunately, P0279 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996. Searches related to P0279 - Cylinder 7 Injector Circuit Low cylinder 7 injector circuit low 6.0 powerstroke p0279 6.0 powerstroke p0279 7.3 powerstroke p0282 p0281 what does injector circuit low mean p0261 p0264 p0267 p0270 p0270 6.0 powerstroke