SFI SYSTEM, Diagnostic DTC:P019011

DTC Code DTC Name
P019011 Fuel Rail Pressure Sensor "A" Circuit Short to Ground

DESCRIPTION

A001W8EE18

The fuel pressure sensor is installed on the delivery pipe for high pressure side. The fuel pressure sensor changes the fuel pressure for high pressure side into an electrical signal and sends the signal to the ECM. Then the ECM controls the pump discharge using this feedback to maintain the fuel's target pressure between 2.4 and 20 MPa (24.5 and 204 kgf/cm2).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P019011 Fuel Rail Pressure Sensor "A" Circuit Short to Ground The fuel pressure sensor output voltage is less than 0.2933 V for 3 seconds or more when engine running (1 trip detection logic).

  • Open or short in fuel pressure sensor circuit

  • Fuel delivery pipe (Fuel pressure sensor)

  • ECM

 Comes on DTC stored

SAE Code:

P0192

Tech Tips

When this DTC is output, check the fuel pressure (for high pressure side) in the Data List. Enter the following menus: Powertrain / Engine / Data List / All Data / Fuel Pressure (High).

DTC No. Fuel Pressure (High) Malfunction
P019011 Approximately 0 kPag

  • Short to ground in PR circuit

  • Short in PR to EPR circuit

  • Open in VCPR circuit

If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

This DTC is stored if the fuel pressure sensor output voltage is out of the standard range due to an open or short in the sensor circuit.

Example:

If the fuel pressure sensor output voltage is less than 0.2933 V for 3 seconds or more, the ECM store this DTC.

MONITOR STRATEGY

Required Sensors/Components Fuel delivery pipe (fuel pressure sensor)
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the ignition switch off and wait for at least 30 seconds.

  6. Turn the ignition switch to ON.

  7. Turn the GTS on.

  8. Start the engine.

  9. Idle the engine for 10 seconds.

  10. Enter the following menus: Powertrain / Engine / Trouble Codes.

  11. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  13. Input the DTC: P019011.

  14. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

A001WCTE90
*a Fuel Pressure Sensor (Fuel delivery pipe)

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR - ECM)


    1. Disconnect the C54 fuel pressure sensor connector.

    2. Disconnect the C62 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C54-1 (VC) - C62-136 (VCPR) Always Below 1 Ω
      C54-3 (PR) or C62-103 (PR) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL PRESSURE SENSOR)

    A001VR2C35
    *a

    Front view of wire harness connector

    (to Fuel Pressure Sensor)

    1. Disconnect the fuel pressure sensor connector.

    2. Turn the ignition switch to ON.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C54-1 (VC) - C54-2 (E2) Ignition switch ON 4.5 to 5.5 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FUEL DELIVERY PIPE (FUEL PRESSURE SENSOR) Click here

    NG

    REPLACE ECM Click here