Possible Causes
Faulty Fuel Pressure
Faulty Fuel Pressure Regulator
Faulty Fuel Pump
Fuel Return Restricted
Mechanical Defect
الأسباب المحتملة
Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
الأعراض المحتملة
Description
This fault code is stored in the Engine Control Module (ECM) when the fuel pressure is not as expected. Normally manufacturers will support data parameters for actual and desired fuel pressure. When there is a conflict the Engine Control Module stores a fault code.
A number of issues may cause this fault code to be set such as a faulty fuel rail pressure sensor, a mechanical fault with the inlet metering valve or rail pressure control solenoid could cause the valve to become stuck. An electrical fault such as an open circuit in the inlet metering valve or fuel pressure control solenoid on a system with a normally open valve will also cause this situation. A short circuit on the control wire of a normally closed inlet metering valve will also cause this fault.
Also a fault in the injector return system cause the fuel pressure to be higher than expected. This will only be the case when there is not a fuel rail pressure control solenoid fitted. As fuel is dumped through the return circuit when a reduction in fuel pressure is required.
