ECD SYSTEM, Diagnostic DTC:P1432

DTC Code DTC Name
P1432 Particulate Filter Efficiency

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
P1432

Amount of soot in DPF catalytic converter lower than estimated lower limit.

(3 trip detection logic)


  • Differential pressure sensor

  • Exhaust manifold converter sub-assembly (DPF catalytic converter)

  • Air hose

  • ECM

DTC No. Data List
P1432 Adaptation Value of Differential Pressure at Particle Filter

CAUTION / NOTICE / HINT

Note


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

  • After replacing the DPF catalyst, the ECM needs initialization Click here.

  • After replacing the differential pressure sensor, the ECM needs 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 tailpipe 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 tailpipe 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
    OK
  2. CHECK DIFFERENTIAL PRESSURE SENSOR AIR HOSE CONNECTION


    1. Check that the differential pressure sensor air hose is securely installed.

      OK
      Part is securely installed.

    NG
    OK
  3. CHECK DIFFERENTIAL PRESSURE SENSOR


    1. Check for DTCs related to the differential pressure sensor.

      OK
      DTCs related to the differential pressure sensor are not output.

    NG
    OK
  4. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT
  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 and NOx storage catalyst learning value reset Click here.


    NEXT
  6. CONNECT AIR HOSE


    1. Install the air hose.


    NEXT
  7. REPAIR OR REPLACE DIFFERENTIAL PRESSURE SENSOR


    1. Repair or replace the differential pressure sensor or perform inspections and troubleshooting for related DTCs Click here.

      Tech Tips

      When the differential pressure sensor is replaced, perform initialization.


    NEXT
  8. 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