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SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P2454, P2460

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DTC Code DTC Name
P2454 Particulate Filter Pressure Sensor "A" Circuit Low
P2460 Particulate Filter Pressure Sensor "B" Circuit Low
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DESCRIPTION

A differential pressure sensor is installed to monitor the pressure before the GPF catalyst converter. The sensor is a semiconductor type that is not affected by the exhaust gas. The differential pressure sensor outputs the difference between the atmospheric pressure and the pressure before the GPF catalyst.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2454 Particulate Filter Pressure Sensor "A" Circuit Low The output voltage from the differential pressure sensor (for bank 1) is below 0.4 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
P2460 Particulate Filter Pressure Sensor "B" Circuit Low The output voltage from the differential pressure sensor (for bank 2) is below 0.4 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
P2454 Approximately -5 kPa (-0.7 psi)

  • Short in PEX circuit to ground

  • Short in PEX circuit to E2 circuit

  • Open in VC circuit
P2460

  • Short in PEX2 circuit to ground

  • Short in PEX2 circuit to E2 circuit

  • Open in VC 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 below 0.4 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).

  6. Turn the GTS on.

  7. Start the engine and wait 5 seconds or more.

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

  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: P2454 or P2460.

  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 Low
    P2454 Bank 1
    P2460 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
      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
      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
      F58-3 (VC) - F2-26 (VC) Always Below 1 Ω
      F59-3 (VC) - F2-26 (VC) Always Below 1 Ω
      F58-2 (PEX) or F2-32 (PEX) - 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
      Standard Resistance (for LHD)
      Tester Connection Condition Specified Condition
      F60-3 (VC) - F2-26 (VC) Always Below 1 Ω
      F59-3 (VC) - F2-26 (VC) Always Below 1 Ω
      F60-2 (PEX) or F2-32 (PEX) - 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
      Result
      Proceed to
      OK
      NG

    • OK

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    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR