Hi Cristobal.al, is it important that you tell us if the code appears alone or accompanied by others such as P0200 or P1271?. The P0093 code refers to fuel leakage in the high pressure area of the Direct Electronic Control System. First a fuel leak even if it is small in the high pressure area Proboca all of the above, I suppose it has been proven. The other, in the scanner, must be info of Frezze Frame data or frozen data box, is like a photo of the main operating parameters of the system just at the time the failure is detected.
Depending on the scanner you use, I use a maxid to monitor and a generation launch to program injection and other in those systems ... There is a special function in the diagosis sotware of that system ... just the leak test, it is a special function, where the engine control unit increases its sensitivity in terms of pressure changes occur Approx, then returns to idle. This is done for each cylinder that has the engine, at least 1 time. Then the system identifies where the pressure drop that exceeds the threshold scheduled to "set" that code is. If after this test the system cannot identify where the escape is ... from experience you must review obstructions in the low pressure or fuel feed system. In other words, the high pressure pump can be fed with a lower than normal flow, when there is fuel consumption in the rail (injection opening) the pressure drops more than normal. In fact, in a modern Common Rail, ECU monitors that pressure drop in the rail when the injury is opened to compensate for the fuel contribution difference in mm3 that is given between each injury or modify the work cycle of a PWM signal sent to the flow control valve (integrated in the pump) ... well I do not give the can ... cordial greetings from Quilpué V region.
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