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SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P244B, P2465

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DTC Code DTC Name
P244B Particulate Filter Differential Pressure Too High Bank 1
P2465 Particulate Filter Differential Pressure Too High Bank 1
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DESCRIPTION

The GPF (Gasoline Particulate Filter) system is an exhaust purification system which breaks down particulate matter (PM) in the exhaust gasses from the engine.

A GPF catalyst with a porous ceramic structure is used to capture PM. The captured PM is oxidized by combining with oxygen molecules in a high temperature environment.

When fuel cut is performed, after driving under high load, when the temperature of the GPF catalyst is high, PM will be oxidized. However, when driving when the temperature of the GPF catalyst is low, PM oxidization will not be performed sufficiently and PM will accumulate.

If the vehicle is driven continuously under low load, the captured PM will accumulate and eventually clog the filter of the GPF catalyst.

A semi-conductor type differential pressure sensor, which is not affected by exhaust gasses, is installed ahead of the GPF catalyst to monitor the exhaust gas pressure.

The differential pressure sensor detects the difference in pressure between the exhaust gasses at the GPF catalyst and atmospheric pressure.

If the output value of the differential pressure sensor exceeds a threshold, the ECM determines that a large amount of PM and/or metal oxides (ash) has accumulated in the GPF catalyst.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P244B Particulate Filter Differential Pressure Too High Bank 1 The output value of the differential pressure sensor (for Bank 1) exceeds the threshold* for 0.15 seconds or more continuously. (1 trip detection logic)

  • Front exhaust pipe assembly

  • Differential pressure sensor (for bank 1)

  • Mass air flow meter sub-assembly

 Comes on DTC stored
P2465 Particulate Filter Differential Pressure Too High Bank 1 The output value of the differential pressure sensor (for Bank 2) exceeds the threshold* for 0.15 seconds or more continuously. (1 trip detection logic)

  • Front exhaust pipe assembly

  • Differential pressure sensor (for bank 2)

  • Mass air flow meter sub-assembly

 Comes on DTC stored

*: The threshold varies depending on the intake air volume.

Table 1. Related Data List
DTC No. Data List

P244B

P2465

  • GPF Defferential Pressure Offset Bank 1

  • GPF Defferential Pressure Offset Bank 2

  • GPF Clogged Determination Threshold Maximum Bank 1

  • GPF Clogged Determination Threshold Maximum Bank 2

  • GPF Steady Differential Pressure Average Bank 1

  • GPF Steady Differential Pressure Average Bank 2

  • GPF Steady Air Flow Average Bank 1

  • GPF Steady Air Flow Average Bank 2

  • PM Deposition Ratio Bank 1

  • PM Deposition Ratio Bank 2

  • Ash Deposition Ratio Bank 1

  • Ash Deposition Ratio Bank 2

  • MAF
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MONITOR DESCRIPTION

The differential pressure sensor detects the difference in pressure between the exhaust gasses at the GPF catalyst and atmospheric pressure.

If PM and/or metallic oxides (ash) accumulate in the GPF catalyst, the differential pressure sensor value will exceed the threshold and engine output will be restricted while driving under high load.

If this occurs, the ECM will illuminate the MIL and store a DTC.

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MONITOR STRATEGY

Required Sensors/Components Differential pressure sensor
Frequency of Operation Once per driving cycle
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TYPICAL ENABLING CONDITIONS

All of the following conditions are met -
Differential pressure sensor circuit fail Not detected
Mass air flow 110.0 gm/sec or higher
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CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Start the engine and idle it for 5 minutes or more.

  6. Turn the engine switch off and wait for at least 30 seconds.

  7. Start the engine [A].

  8. Quickly accelerate to 60 km/h (37 mph) while in 2nd gear and then decelerate to a stop [B]. Perform step [B] 5 times.

  9. Turn the GTS on.

  10. Enter the following menus: Powertrain / Engine / Trouble Codes [C].

  11. 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.

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

  13. Input the DTC: P244B or P2465.

  14. 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 steps [B] and [C] again.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Tip:
Abnormal Bank Particulate Filter Differential Pressure Too High
Bank 1 P244B
Bank 2 P2465

  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transmission.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • 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.

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PROCEDURE


  1. Click here

    CHECK ANY OTHER DTCS OUTPUT (P244B OR P2465)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Read the DTCs.


      1. Powertrain > Engine > Trouble Codes


      Result
      Result Proceed to
      DTC P0244B or P2465 is output A
      DTC P0244B or P2465 and other DTCs are output B
      Tip:

      If any DTCs other than P244B or P2465 are output, troubleshoot those DTCs first.


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    READ VALUE USING GTS (ASH DEPOSITION RATIO)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Ash Deposition Ratio Bank 1 or Ash Deposition Ratio Bank 2.


      1. Powertrain > Engine > Data List
        Tester Display
        Ash Deposition Ratio Bank1
        Ash Deposition Ratio Bank2





    5. Read the values displayed on the GTS.

      Tip:

      When replacing the front exhaust pipe assembly, make sure to perform GPF Deposition Values Clear.

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      Result
      Result Proceed to
      Less than 100% A
      100% or higher B

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    READ VALUE USING GTS (PM DEPOSITION RATIO, ASH DEPOSITION RATIO)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / PM Deposition Ratio Bank 1 and Ash Deposition Ratio Bank 1, or PM Deposition Ratio Bank 2 and Ash Deposition Ratio Bank 2.


      1. Powertrain > Engine > Data List
        Tester Display
        PM Deposition Ratio Bank1
        PM Deposition Ratio Bank2
        Ash Deposition Ratio Bank1
        Ash Deposition Ratio Bank2







    5. Read the values displayed on the GTS.

      Tip:

      When replacing the front exhaust pipe assembly, make sure to perform GPF Deposition Values Clear.

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      Result
      GTS Display Result Proceed to
      PM Deposition Ratio Bank 1 + Ash Deposition Ratio Bank 1 or PM Deposition Ratio Bank 2 + Ash Deposition Ratio Bank 2 Less than 100% A
      100% or higher B

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    INSPECT DIFFERENTIAL PRESSURE SENSOR

    09992-00242

    1. Connect the GTS to the DLC3.

    2. Turn the engine switch ON (IG).

    3. Turn the GTS on.

    4. Remove the V-bank cover sub-assembly.

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    5. B006680E01

      for Bank 1 side:


      1. Enter the following menus: Powertrain / Engine and ECT / Data List / GPF Defferential Pressure Offset Bank 1.


        1. Powertrain > Engine > Data List
          Tester Display
          GPF Differential Pressure Offset Bank1




      2. Slide the clip and disconnect the No. 2 vacuum transmitting hose assembly from the differential pressure sensor assembly.

      3. Connect SST to the differential pressure sensor assembly.

      4. Using SST, apply pressure to the differential pressure sensor assembly.

      5. Check the pressure value of the differential pressure sensor assembly.

        Standard
        GTS Display Condition Specified Condition
        GPF Defferential Pressure Offset Bank 1 Engine switch on (IG)

        When applying 20 kPa (2.9 psi): 20 kPa (2.9 psi)

        When applying 40 kPa (5.8 psi): 40 kPa (5.8 psi)
        Note:

        Perform the inspection within the range of 0 to 98 kPa (0 to 14.2 psi).

      6. Disconnect SST from the differential pressure sensor assembly.

      7. Connect the No. 2 vacuum transmitting hose assembly to the differential pressure sensor assembly and slide the clip to secure it.

      Result
      Proceed to
      OK
      NG
    6. B0066FTE01

      for Bank 2 side:


      1. Enter the following menus: Powertrain / Engine and ECT / Data List / GPF Defferential Pressure Offset Bank 2.


        1. Powertrain > Engine > Data List
          Tester Display
          GPF Differential Pressure Offset Bank2




      2. Slide the clip and disconnect the No. 1 vacuum transmitting hose assembly from the differential pressure sensor assembly.

      3. Connect SST to the differential pressure sensor assembly.

      4. Using SST, apply pressure to the differential pressure sensor assembly.

      5. Check the pressure value of the differential pressure sensor assembly.

        Standard
        GTS Display Condition Specified Condition
        GPF Defferential Pressure Offset Bank 2 Engine switch on (IG)

        When applying 20 kPa (2.9 psi): 20 kPa (2.9 psi)

        When applying 40 kPa (5.8 psi): 40 kPa (5.8 psi)
        Note:

        Perform the inspection within the range of 0 to 98 kPa (0 to 14.2 psi).

      6. Disconnect SST from the differential pressure sensor assembly.

      7. Connect the No. 1 vacuum transmitting hose assembly to the differential pressure sensor assembly and slide the clip to secure it.

    7. Install the V-bank cover sub-assembly.

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  5. Click here

    READ VALUE USING GTS (MAF)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / MAF.

    5. Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.

    6. Read Mass Air Flow Sensor while maintaining an engine speed of 3000 rpm.

      Standard
      GTS Display Condition Specified Condition
      MAF

      Engine warmed up

      Shift position: P

      A/C: Off

      Engine Speed: 3000 rpm

      		 Between 17.0 and 23.0 gm/sec
      Tip:

      When replacing the front exhaust pipe assembly, make sure to perform GPF Deposition Values Clear.

      Click here

      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE FRONT EXHAUST PIPE ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE MASS AIR FLOW METER SUB-ASSEMBLY CIRCUITClick here

  6. Click here

    CHECK HARNESS AND CONNECTOR (DIFFERENTIAL PRESSURE SENSOR - ECM)


    1. Disconnect the differential pressure sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (for RHD)
      Tester Connection Condition Specified Condition
      F58-2 (PEX) - F2-32 (PEX) Always Below 1 Ω
      F58-1 (E2) - F2-24 (E2) Always Below 1 Ω
      F59-2 (PEX2) - F7-30 (PEX2) Always Below 1 Ω
      F59-1 (E2) - F2-24 (E2) Always Below 1 Ω
      F58-2 (PEX) or F2-32 (PEX) - Body ground and other terminals Always 10 kΩ or higher
      F58-3 (VC) or F2-26 (VC) - Body ground and other terminals Always 10 kΩ or higher
      F59-2 (PEX2) or F7-30 (PEX2) - Body ground and other terminals Always 10 kΩ or higher
      F59-3 (VC) or F2-26 (VC) - Body ground and other terminals Always 10 kΩ or higher
      Standard Resistance (for LHD)
      Tester Connection Condition Specified Condition
      F60-2 (PEX) - F2-32 (PEX) Always Below 1 Ω
      F60-1 (E2) - F2-24 (E2) Always Below 1 Ω
      F59-2 (PEX2) - F7-30 (PEX2) Always Below 1 Ω
      F59-1 (E2) - F2-24 (E2) Always Below 1 Ω
      F60-2 (PEX) or F2-32 (PEX) - Body ground and other terminals Always 10 kΩ or higher
      F60-3 (VC) or F2-26 (VC) - Body ground and other terminals Always 10 kΩ or higher
      F59-2 (PEX2) or F7-30 (PEX2) - Body ground and other terminals Always 10 kΩ or higher
      F59-3 (VC) or F2-26 (VC) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE DIFFERENTIAL PRESSURE SENSORClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR