Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Fuel Pressure Regulator Solenoid 1 Control Circuit
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0090
Circuit / System Description
The fuel pressure regulator solenoid is used to control the fuel pressure from the high pressure fuel pump to the fuel rail. The fuel pressure regulator solenoid is pulse width modulated (PWM). An ignition voltage is supplied to the fuel pressure regulator solenoid. The ECM controls the solenoid by grounding the control circuit with a solid state device called a driver.