СИСТЕМА ECD, Diagnostic DTC:P115D

DTC Code DTC Name
P115D Negative Low Pressure Status below Limit (EGR Line Clogging)

DESCRIPTION

Tech Tips

For more information on the EGR control, refer to System Description Click here.

DTC No. DTC Detection Condition Trouble Area
P115D

Either condition is met (3 trip detection logic):


  • Measured air mass compared with calculated air mass too high for 5 seconds or more.

  • Measured air mass compared with calculated air mass too high and high boost pressure deviation for 5 seconds or more.

  • Intake system air leak

  • Intake air temperature sensor

  • EGR valve assembly

  • EGR cooler assembly

  • Turbo pressure sensor assembly

  • ECM
Related Data List
DTC No. Data List
P115D

  • Target EGR Position

  • Actual EGR Valve Pos

  • Intake Air Temp (Turbo)

INSPECTION PROCEDURE

Note


  • When replacing the ECM, the ECM needs Registration and Initialization Click here.

  • After replacing the EGR valve assembly, the ECM needs initialization Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

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

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Read the DTCs.

      Result
      Result Proceed to
      DTC P115D A
      DTC P115D and other DTCs B

    B

    GO TO DTC CHART Click here

    A

  2. CHECK INTAKE AIR TEMPERATURE SENSOR


    1. Connect the GTS to the DLC3.

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

    3. Start the engine.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air Temp (Turbo).

      OK
      A value excessively higher than the actual intake air temperature is not displayed.

    NG

    REPLACE INTAKE AIR TEMPERATURE SENSOR Click here

    OK

  3. CHECK TURBO PRESSURE SENSOR


    1. Check for DTCs related to the turbo pressure sensor assembly.


    NG

    REPLACE TURBO PRESSURE SENSOR Click here

    OK

  4. CHECK INTAKE SYSTEM


    1. Start the engine.

    2. Check air duct between intake silencer, mass air flow meter and turbocharger for leaks.

    3. Check air duct between turbocharger and intake manifold for leaks.

      Tech Tips


      • Oily patches are signs of leaks.

      • Check whether sealing rings on charge air hoses are rolled back or missing.

      OK
      No leakage.

    NG

    REPAIR OR REPLACE INTAKE SYSTEM Click here

    OK

  5. PERFORM ACTIVE TEST USING GTS (ACTUATOR TEST OF EGR-VALVE)


    1. Connect the GTS to the DLC3.

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

    3. Start the engine.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Actuator Test of EGR-Valve / Data List / Target EGR Position and Actual EGR Valve Pos.

      OK
      The Actual EGR Valve Pos value follows the Target EGR Position value.

      Tech Tips


      • If DTCs P115D, P042F or P1268 are output there may be a malfunction in the EGR system.

      • This inspection is primarily to check that the EGR valve is not clogged with soot and not stuck closed.


    NG

    REPLACE EGR VALVE ASSEMBLY Click here

    OK

  6. CHECK EGR COOLER ASSEMBLY


    1. Check the EGR cooler assembly Click here.

    2. Check that the airflow is not slowed by soot deposits in the EGR cooler.

      OK
      Airflow is not slowed by soot deposits.

      Tech Tips

      If a malfunction is detected during this inspection, soot deposits may be accumulating in the EGR cooler.


    NG

    REPAIR OR REPLACE EGR COOLER ASSEMBLY Click here

    OK

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P115D)


    1. Connect the GTS to the DLC3.

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

    3. Clear the DTCs Click here.

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Read the DTCs.

      Result
      Result Proceed to
      No DTC A
      DTC P115D B

    B

    REPLACE ECM Click here

    A

    END

  8. REPLACE INTAKE AIR TEMPERATURE SENSOR


    1. Replace the intake air temperature sensor Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  9. REPLACE TURBO PRESSURE SENSOR


    1. Replace the turbo pressure sensor Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  10. REPAIR OR REPLACE INTAKE SYSTEM


    1. Repair or replace the malfunctioning parts of the intake system.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  11. REPLACE EGR VALVE ASSEMBLY


    1. Replace the EGR valve assembly Click here.

    2. Perform EGR learning value reset Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  12. REPAIR OR REPLACE EGR COOLER ASSEMBLY


    1. Clean the EGR cooler assembly.

    2. If soot deposits cannot be removed, replace the EGR cooler assembly. Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  13. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  14. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

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

    3. Clear the DTCs Click here.

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END