P0092

DTC P0092 Fuel Pressure Regulator Solenoid 1 Control Circuit High Voltage

Circuit Description

The fuel rail pressure (FRP) regulator is installed to the fuel supply pump and controls the suction fuel quantity into the fuel rail. The FRP regulator is fully opened in the normal state and larger drive current results in smaller opening. The ECM calculates desired fuel rail pressure and fuel flow rate and it compares the calculated desired fuel rail pressure to the actual value to determine the FRP regulator position. When the actual fuel rail pressure is higher than the desired value the FRP regulator is closed to decease the flow rate. If the ECM detects an excessively high FRP regulator solenoid feedback current this DTC will set.

Condition for Running the DTC

^ DTCs P0091 P0642 and P0643 are not set.
^ The battery voltage is between 10 to 16 volts.
^ The ignition switch is ON.
^ The fuel supply pump control is stable.
^ The FRP regulator commanded duty ratio is less than 20%.

Condition for Setting the DTC

^ The ECM detects that the FRP regulator feedback current is more than 2700mA.

Action Taken When the DTC Sets

^ The ECM illuminates the MIL when the diagnostic runs and fails. Refer to DTC Type Definitions for Action Taken When the DTC Sets - Type A.
^ The ECM inhibits accelerator pedal control.
^ The ECM inhibits EGR control.
^ The ECM inhibits DPF regeneration control.
^ The ECM inhibits cruise control.
^ The ECM inhibits PTO control.

Condition for Clearing the DTC

^ Refer to DTC Type Definitions for Condition for Clearing the MIL/DTC - Type A.

Diagnostic Aids

^ If an intermittent condition is suspected refer to in this section.

Circuit System Testing DTC P0092