ECD SYSTEM(w/ DPF), Diagnostic DTC:P2453

DTC Code DTC Name
P2453 Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance

DESCRIPTION

Tech Tips


  • For more information on the differential pressure sensor assembly and Diesel Particulate Filter (DPF), refer to the following procedures.

    Click here

  • If P2453 is present, refer to the DTC chart for DPF system.

    Click here

  • If the vacuum transmitting hose assemblies of the differential pressure sensor assembly are incorrectly connected (crossed), the ECM interprets this as an abnormal pressure difference, DTC P2453 (Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance) is stored and the MIL illuminates.

Refer to DTC P2454.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2453 Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance When the output voltage from the differential pressure sensor assembly output voltage is reversal of positive and negative pressure (and vice versa) (1 trip detection logic).

  • Incorrect vacuum transmitting hose assembly

  • Vacuum transmitting hose assembly is clogged

  • Blockage in vacuum transmitting pipe sub-assembly

  • Differential pressure sensor assembly

  • ECM

 Comes on DTC stored
Related Data List
DTC No. Data List
P2453 DPF Differential Pressure

Tech Tips


  • DTC P2454 (Diesel Particulate Filter Pressure Sensor "A" Circuit Low) and/or DTC P2455 (Diesel Particulate Filter Pressure Sensor "A" Circuit High) will be stored if there is an open or short malfunction in the differential pressure sensor assembly circuit.

  • After confirming DTC P2453, check the differential pressure in "Powertrain / Engine and ECT / Data List / Diesel Exhaust / DPF Differential Pressure" using the GTS.

Reference:
Condition Differential Pressure Output Sensor Condition
Ignition switch ON Approximately 0 kPa Normal
Always -5 kPa or less or higher than 99 kPa Open or short circuit
4000 rpm (No engine load) Negative output Incorrect hose routing

MONITOR DESCRIPTION

In order to detect abnormality in the differential pressure sensor assembly, the ECM always monitors the output voltage from the sensor. When the sensor output voltage is a reversal of positive and negative pressure, the ECM interprets this as an incorrect vacuum hose arrangement of the sensor, or determines that the vacuum hoses are clogged, and illuminates the MIL.

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P2453 Engine is running at 4000 rpm with no load for 10 seconds or more.

CAUTION / NOTICE / HINT

Note

After replacing the ECM, the new ECM needs registration (Click here) and initialization Click here.

Tech Tips

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 OTHER DTC OUTPUT (IN ADDITION TO DTC P2453)


    1. Connect the GTS to the DLC3.

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

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

    4. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P2453 is output A
      DTC P2453 and other DTCs are output B

      Tech Tips

      If any DTCs other than P2453 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK CONNECTION OF AIR HOSE NO.1 (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY - VACUUM PIPE NO. 1, NO. 2) (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY - VACUUM TRANSMITTING PIPE SUB-ASSEMBLY)


    1. Check if the air hose No. 1 routing between the differential pressure sensor assembly and vacuum pipe No. 1, No. 2 correct.

      Click here

    2. Check that there is no exhaust gas leakage between the differential pressure sensor and vacuum pipe No. 1, No. 2.

      Result
      Proceed to
      OK
      NG

    NG

    CORRECT TO NORMAL CONNECTION Click here

    OK

  3. CHECK AIR HOSE AND VACUUM PIPE NO. 1, NO. 2

    CAUTION:

    Be careful of being burned by exhaust gases during the following inspection.


    1. Disconnect the both vacuum vacuum pipe No. 1, No. 2 (upstream and downstream) from the differential pressure sensor assembly.

    2. Start the engine.

    3. Check if there are exhaust gas pulsations from both vacuum pipe No. 1, No. 2 during idle.

      OK
      Exhaust gas pulsation exists.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CLOGGED PARTS Click here

    OK

  4. READ VALUE USING GTS (DPF DIFFERENTIAL PRESSURE)


    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 / Data List / DPF Differential Pressure.


      Powertrain > Engine > Data List
      Tester Display
      DPF Differential Pressure

    4. Check that the differential pressure is as specified below.

      Result
      Condition Differential Pressure Output Sensor Condition
      Ignition switch ON Approximately 0 kPa Normal
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 6 Click here

    NG

  5. REPLACE DIFFERENTIAL PRESSURE SENSOR ASSEMBLY


    1. Replace the differential pressure sensor assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. 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.


      Powertrain > Engine > Clear DTCs

    4. Turn the ignition switch off for 30 seconds or more.

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

    6. Enter the following menus: Powertrain / Engine and ECT / Data List / Diesel Exhaust / DPF Differential Pressure.


      Powertrain > Engine > Data List
      Tester Display
      DPF Differential Pressure

    7. Check that the differential pressure is as specified below.

      Tech Tips


      • As long as the pipe connections are correct, the displayed pressure will not be vacuum pressure.

      • For reference result of real-vehicle check is as shown in the table below:

        Condition DPF Differential Pressure
        2500 rpm without load 0.5 kPa or higher

    8. Start the engine.

    9. Engine is running at 4000 rpm with no load for 10 seconds or more.

    10. Confirm that the DTC is not output.

      Tech Tips

      Perform the following procedure using the GTS to determine whether or not the DTC judgment has been carried out.


      1. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.


        Powertrain > Engine > Utility
        Tester Display
        All Readiness

      2. Input DTC P2453.

      3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, run the engine at 4000 rpm with no load for 10 seconds or more.

      Result
      Proceed to
      NEXT

    NEXT

    END

  7. REPLACE CLOGGED PARTS

    Result
    Proceed to
    NEXT

    NEXT

    GO TO STEP 6 Click here

  8. CORRECT TO NORMAL CONNECTION

    Result
    Proceed to
    NEXT

    NEXT

    GO TO STEP 6 Click here