SFI SYSTEM(w/ GPF), Diagnostic DTC:P023511

DTC Code DTC Name
P023511 Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground

DESCRIPTION

The internal sensor in the No.2 turbo pressure sensor detects the intercooler internal pressure as a voltage.

B008GVCE02
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P023511 Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground The output voltage from the No. 2 turbo pressure sensor is below 0.97 V for 3 seconds or more (1 trip detection logic).

  • Open or short in No. 2 turbo pressure sensor circuit

  • No. 2 turbo pressure sensor

  • ECM

 Comes on DTC stored SAE: P0237

Tech Tips

When a DTC is output, check the Data List item "Boost Pressure Sensor" using the GTS.

Click here

DTC No. Boost Pressure Sensor Malfunction
P023511 Approximately 0 kPa [0 psi]

  • Short in PTA circuit to ground

  • Short in PTA circuit to EPTA circuit

  • Open in VPTA 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.

MONITOR DESCRIPTION

The ECM calculates the intercooler internal pressure from the No.2 turbo pressure sensor output voltage. If the No.2 turbo pressure sensor output voltage is not within the normal range, there may be a malfunction in the No.2 turbo pressure sensor or an open or short circuit. In this case, the ECM illuminates the MIL and stores a DTC.

Example:

When the sensor output voltage is below 0.97 V for 3 seconds or more, the ECM stores a DTC.

MONITOR STRATEGY

Required Sensors/Components No. 2 turbo pressure sensor
Frequency of Operation Continuous

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) and turn the GTS on.

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

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

  8. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

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

  10. Input the DTC: P023511.

  11. 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

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

WIRING DIAGRAM

B008I0KE09
*a VPTA
*b PTA
*c EPTA
*d No. 2 Turbo Pressure Sensor

CAUTION / NOTICE / HINT

Tech Tips

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.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 2 TURBO PRESSURE SENSOR)


    1. B008HVTC12
      *a

      Front view of wire harness connector

      (to No. 2 Turbo Pressure Sensor)

      Disconnect the No. 2 turbo 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
      Tester Connection Condition Specified Condition
      C15-3 (VC) - C15-1 (E2) Engine switch on (IG) 4.5 to 5.5 V
      C15-2 (PTA) - C15-1 (E2) Engine switch on (IG) 3.0 to 5.5 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
      Tester Connection Condition Specified Condition
      C15-3 (VC) - C15-2 (PTA) Engine switch off 171 to 189 kΩ
      C15-1 (E2) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (NO. 2 TURBO PRESSURE SENSOR - ECM) Click here

    OK

  2. REPLACE NO. 2 TURBO PRESSURE SENSOR


    1. Replace the No. 2 turbo pressure sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK WHETHER DTC OUTPUT RECURS (P023511)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTC.


      Powertrain > Engine > Clear DTCs

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

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

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

    10. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P023511 is output B

    A

    END

    B

    REPLACE ECM Click here

  4. CHECK HARNESS AND CONNECTOR (NO. 2 TURBO PRESSURE SENSOR - ECM)


    1. Disconnect the No. 2 turbo pressure sensor connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C15-3 (VC) - C20-140 (VPTA) Always Below 1 Ω
      C15-3 (VC) or C20-140 (VPTA) - Body ground and other terminals Always 10 kΩ or higher
      C15-2 (PTA) or C20-108 (PTA) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR