P0192 - Pression du rail de carburant 308 1.6 HDI

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P0192 - Pression du rail de carburant 308 1.6 HDI

Message par Admin le Dim 31 Déc - 20:09

The ECM (engine control module) monitors fuel pressure for at least a couple of reasons. First, fuel pressure is important to modulate fuel injector pulse width. Generally speaking, higher fuel pressure requires less pulse width to get the same amount of fuel. Second, fuel pressure readings are used to modulate the fuel pressure regulator, which the ECM controls depending on driver demand and engine loading conditions. Finally, fuel pressure needs to be finely controlled to keep from damaging anything. With HP fuel rail pressures ranging from 5,000 to 23,000 psi maximum, overpressure conditions could easily lead to component failure and leaks, such as from ruptured fuel lines or fittings.

If the ECM detects a problem with the fuel rail pressure sensor (RPS), such as insufficient or excessive voltage feedback, or an open or short circuit, it will lock out the HP pump and put the engine into limp-home mode. The MIL (malfunction indicator lamp) will be illuminated, and a DTC (diagnostic trouble code) will be set in ECM memory. DTC P0192 is defined as Fuel Rail Pressure Sensor Low Input.[Vous devez être inscrit et connecté pour voir cette image]


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Date d'inscription : 15/08/2017
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