SFI SYSTEM, Diagnostic DTC:P008800

DTC Code DTC Name
P008800 Fuel Rail / System Pressure - Too High

DESCRIPTION

Refer to DTC P008700.

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DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P008800

Fuel Rail / System Pressure - Too High

Although the ECM is requesting the fuel pump (for high pressure side) to open the spill control valve, fuel pressure increases 4 MPa (40.8 kgf/cm2, 580 psi) from target pressure for about 10 seconds (1 trip detection logic).

  • Fuel pump (for high pressure side)

  • Fuel pressure sensor (fuel delivery pipe)

  • ECM

Comes on

DTC stored

SAE Code:

P0088

MONITOR DESCRIPTION

If the fuel pressure increases despite a decrease request signal being sent to the fuel pump (for high pressure side) by the ECM, the ECM will illuminate the MIL and store this DTC.

MONITOR STRATEGY

Required Sensors/Components

Fuel pressure sensor

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON and turn the GTS on.

  3. Record the freeze frame data.

  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 and turn the GTS on.

  7. Start the engine.

  8. Based on the engine speed, engine load and other conditions displayed in the freeze frame data, reproduce the conditions present when the DTC was stored.

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

  10. Read the pending DTCs.

    Tip:

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

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

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

  12. Input the DTC: P008800.

  13. 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
    Tip:

    • 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.

CAUTION / NOTICE / HINT

Tip:

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 OTHER DTCS OUTPUT (IN ADDITION TO DTC P008800)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the DTCs.

      Powertrain > Engine > Trouble Codes

      Result

      Result

      Proceed to

      DTC P008800 is output

      A

      DTC P008800 and other DTCs are output

      B
      Tip:

      If any DTCs other than P008800 are output, troubleshoot those DTCs first.

    B

    GO TO DTC CHART

    Click hereClick here

    A

  2. READ VALUE USING GTS (FUEL PRESSURE (HIGH))

    1. Connect the GTS to the DLC3.

    2. Start the engine and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine / Data List / All Data / Fuel Pressure (High).

      Powertrain > Engine > Data List

      Tester Display

      Fuel Pressure (High)

    4. According to the display on the GTS, read the Data List while racing the engine.

      OK

      Fuel pressure fluctuates.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FUEL DELIVERY PIPE (FUEL PRESSURE SENSOR)

    Click here

    OK

  3. REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)

    1. Replace the fuel pump (for high pressure side).

      Click here

      Tip:

      Perform "Inspection After Repair" after replacing the fuel pump (for high pressure side).

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  4. CHECK IF DTC OUTPUT RECURS (SEE IF DTC P008800 IS OUTPUT AGAIN)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs

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

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

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

    10. Read the DTCs.

      Powertrain > Engine > Trouble Codes

      Result

      Result

      Proceed to

      DTC P008800 is output

      A

      DTCs are not output

      B
    A

    REPLACE ECM

    Click here

    B

    END