What Does P0318 Mean? The PCM has detected a variation in crankshaft position that it contributes to a rough or uneven driving condition, a code of this type may be stored. “Sensor A” indicates an area of the rough road sensor system circuitry, rather than a particular component. engine code P0318P0318 fixobd P0318dtc P0318obd code P0318obd2 P0318P0318 car codediagnostic code P0318car code P0318check engine code P0318fehlercode P0318P0318 fiatcodigo P0318codigo falla P0318P0318 kody b??dówcodigo de falla P0318 What are the common causes of P0318 ? Any time the PCM recognizes a sudden crankshaft position fluctuation while driving on uneven or rough surfaces, a code of this type may be stored and the service engine soon lamp will come on. Please note that some vehicles require several failure cycles until the service engine soon lamp comes on. You might also have disconnected, missing, or defective rough road sensors or other rough road detection hardware. How do you troubleshoot P0318 ? 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 P0318 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 P0318. Fortunately, P0318 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996. Searches related to P0318 - Rough Road Sensor 'A' Signal Circuit 2003 cadillac cts rough road sensor 2003 cadillac cts rough road sensor location p0318 vw passat rough road sensor buick gm dtc p0318 p0318 saturn p0318 smart po318