СИСТЕМА ECD, Diagnostic DTC:P2002

DTC Code DTC Name
P2002 Diesel Particulate Filter Efficiency Below Threshold Bank 1

DESCRIPTION

Tech Tips

For more information on the diesel particulate filter (DPF) catalyst regeneration control, refer to System Description Click here.

DTC No. DTC Detection Condition Trouble Area
P2002

Differential pressure sensor (exhaust gas pressure sensor) value falls below estimated permissible lower limit, DPF catalytic converter is removed or determined to be damaged for 2 seconds or more

(3 trip detection logic)

  • Vacuum transmitting hose disconnected

  • Differential pressure sensor (exhaust gas pressure sensor)

  • Exhaust manifold converter subassembly (DPF catalytic converter)

  • ECM
DTC No. Data List
P2002 Filtered Pressure Value at Particle Filter Upstream (EU5)

INSPECTION PROCEDURE

Note

When replacing the ECM and/or DPF catalyst, the ECM needs Registration and Initialization Click here.

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 EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY (DPF CATALYTIC CONVERTER)


    1. Check that the DPF catalytic converter is installed.

      OK
      DPF catalytic converter is installed.

      Tech Tips

      If the DPF catalytic converter is not installed, the exhaust tail pipe turns black from soot.

    2. Check that the DPF catalytic converter is not damaged.

      OK
      DPF catalytic converter is not damaged.

      Tech Tips


      • If the DPF catalytic converter is damaged, the exhaust tail pipe and edge of the filter turn black from soot.

      • Disconnect the front exhaust pipe assembly from the exhaust manifold converter sub-assembly (DPF catalytic converter) and check for soot stuck inside the exhaust manifold converter sub-assembly (DPF catalytic converter).


    NG

    INSTALL OR REPLACE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY (DPF CATALYTIC CONVERTER) Click here

    OK

  2. CHECK DIFFERENTIAL PRESSURE SENSOR (EXHAUST GAS PRESSURE SENSOR) AIR HOSE CONNECTION


    1. Check that the differential pressure sensor (exhaust gas pressure sensor) air hose is securely installed.

      OK
      Part is securely installed.

    NG

    CONNECT AIR HOSE Click here

    OK

  3. CHECK DIFFERENTIAL PRESSURE SENSOR (EXHAUST GAS PRESSURE SENSOR)


    1. Check for DTCs related to the differential pressure sensor (exhaust gas pressure sensor).

      OK
      DTCs related to the differential pressure sensor (exhaust gas pressure sensor) are not output.

    NG

    REPAIR OR REPLACE EXHAUST GAS PRESSURE SENSOR (EXHAUST GAS PRESSURE SENSOR) Click here

    OK

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2002)


    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: Engine and ECT / Trouble Codes.

    8. Read the DTCs.

      Result
      Result Proceed to
      No DTC output A
      DTC P2002 B

    B

    REPLACE ECM Click here

    A

    END

  5. INSTALL OR REPLACE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY (DPF CATALYTIC CONVERTER)


    1. Install or replace the exhaust manifold converter sub-assembly (DPF catalytic converter) Click here.

    2. Perform DPF history information reset Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  6. CONNECT AIR HOSE


    1. Install the air hose.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. REPAIR OR REPLACE EXHAUST GAS PRESSURE SENSOR (EXHAUST GAS PRESSURE SENSOR)


    1. Repair or replace differential pressure sensor (exhaust gas pressure sensor) or perform inspections and troubleshooting for related DTCs Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  8. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  9. 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: Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END