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SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P2455, P2461

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DTC Code DTC Name
P2455 Particulate Filter Pressure Sensor "A" Circuit High
P2461 Particulate Filter Pressure Sensor "B" Circuit High
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DESCRIPTION

Refer to DTC P2454.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2455 Particulate Filter Pressure Sensor "A" Circuit High The output voltage from the differential pressure sensor (for bank 1) is higher than 4.8 V for 3 seconds or more (1 trip detection logic).

  • Open or short in differential pressure sensor (for bank 1) circuit

  • Differential pressure sensor (for bank 1)

  • ECM

 Does not come on DTC stored
P2461 Particulate Filter Pressure Sensor "B" Circuit High The output voltage from the differential pressure sensor (bank 2) is higher than 4.8 V for 3 seconds or more (1 trip detection logic).

  • Open or short in differential pressure sensor (for bank 2) circuit

  • Differential pressure sensor (for bank 2)

  • ECM

 Does not come on DTC stored
Tip:

When a DTC is output, check the Data List item "GPF Defferential Pressure Offset Bank 1 and GPF Defferential Pressure Offset Bank 2" using the GTS.

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DTC No. GPF Defferential Pressure Offset Bank 1 or GPF Defferential Pressure Offset Bank 2 Malfunction
P2455 100 kPa (14.5 psi) or higher

  • Short in VC circuit to PEX circuit

  • Open in PEX circuit

  • Open in E2 circuit
P2461

  • Short in VC circuit to PEX2 circuit

  • Open in PEX2 circuit

  • Open in E2 circuit

If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

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MONITOR DESCRIPTION

In order to detect abnormality in the differential pressure sensor, the ECM always monitors the output voltage from the sensor. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the sensor circuit and illuminates the MIL.

Example:

When the sensor output voltage is higher than 4.8 V for 3 seconds or more, the ECM stores a DTC.

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MONITOR STRATEGY

Frequency of Operation Continuous
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CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

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

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

  5. Turn the engine switch on (IG) [A].

  6. Turn the GTS on.

  7. Start the engine and wait 5 seconds or more [B].

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

  9. 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.

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

  11. Input the DTC: P2455 or P2461.

  12. 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.

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WIRING DIAGRAM

Refer to DTC P244B.

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CAUTION / NOTICE / HINT

Tip:

  • 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.

    Abnormal Bank Particulate Filter Pressure Sensor Circuit High
    P2455 Bank 1
    P2461 Bank 2

  • 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. *a Front view of wire harness connector (to Differential Pressure Sensor) *b RHD *c LHD *d Bank 1 *e Bank 2
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    CHECK HARNESS AND CONNECTOR

    Tip:

    Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


    1. Disconnect the differential pressure sensor connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage (for RHD)
      Tester Connection Condition Specified Condition
      F58-3 (VC) - F58-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      F59-3 (VC) - F59-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      F58-2 (PEX) - F58-1 (E2) Engine switch on (IG) 0.5 to 1.0 V
      F59-2 (PEX2) - F59-1 (E2) Engine switch on (IG) 0.5 to 1.0 V
      Standard Voltage (for LHD)
      Tester Connection Condition Specified Condition
      F60-3 (VC) - F60-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      F59-3 (VC) - F59-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      F60-2 (PEX) - F60-1 (E2) Engine switch on (IG) 0.5 to 1.0 V
      F59-2 (PEX2) - F59-1 (E2) Engine switch on (IG) 0.5 to 1.0 V

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

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

      Standard Resistance (for RHD)
      Tester Connection Condition Specified Condition
      F58-3 (VC) - F58-2 (PEX) Engine switch off 190 to 210 kΩ
      F59-3 (VC) - F59-2 (PEX2) Engine switch off 190 to 210 kΩ
      F58-1 (E2) - Body ground Always Below 1 Ω
      F59-1 (E2) - Body ground Always Below 1 Ω
      Standard Resistance (for LHD)
      Tester Connection Condition Specified Condition
      F60-3 (VC) - F60-2 (PEX) Engine switch off 190 to 210 kΩ
      F59-3 (VC) - F59-2 (PEX2) Engine switch off 190 to 210 kΩ
      F60-1 (E2) - Body ground Always Below 1 Ω
      F59-1 (E2) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

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    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) - Other terminals Always 10 kΩ or higher
      F59-2 (PEX2) or F7-30 (PEX2) - 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) - Other terminals Always 10 kΩ or higher
      F59-2 (PEX2) or F7-30 (PEX2) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

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    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR