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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (2 Of 6) >> SFI System >> DTC P0190-2A: Fuel Rail Pressure Sensor "A" Signal Stuck in Range; DTC P0190-64: Fuel Rail Pressure Sensor "A" Signal Plausibility Failure [12/2019 - 10/2022] >> Procedure

DTC P0190-2A: Fuel Rail Pressure Sensor "A" Signal Stuck in Range; DTC P0190-64: Fuel Rail Pressure Sensor "A" Signal Plausibility Failure [12/2019 - 10/2022]: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0190-2A OR P0190-64) 
    1. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTC P0190-2A or P0190-64 is output A
      DTC P0190-2A or P0190-64, and P0087-00, P0088-00, P0171-00, P0172-00, P0174-00 and/or P0175-00 are output
      DTC P0190-2A or P0190-64 and other DTCs are output B

      HINT: 

      • If DTC P0190-2A or P0190-64, and P0087-00, P0088-00, P0171-00, P0172-00, P0174-00 and/or P0175-00 are output simultaneously, troubleshoot for DTC P0190-2A or P0190-64 first.
      • If any DTCs other than P0190-2A or P0190-64 are output, troubleshoot those DTCs first.

    Result: 

    B 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 10/2022] 

    Result: 

    A 

    See step  2

  2. CHECK FUEL LEAK 
    1. Check around and beneath the vehicle for fuel leaks, fumes, etc.

      OK

      No fuel leaks present.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  3

  3. PERFORM ACTIVE TEST USING GTS (CONTROL THE TARGET FUEL PRESSURE OFFSET) 
    1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

      Powertrain > Engine > Data List 

      Tester Display
      Coolant Temperature
    2. Check the value of the Data List item "High Fuel Pressure Sensor" when the target fuel pressure is increased and decreased using the Active Test.

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Target Fuel Pressure Offset
      Data List Display
      High Fuel Pressure Sensor

      Result

      Result Proceed to
      "High Fuel Pressure Sensor" value follows the change in target fuel pressure A
      "High Fuel Pressure Sensor" value does not follow the change in target fuel pressure B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) - ECM) 
    1. Disconnect the fuel pressure sensor (for high pressure side) 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
      F1-3 (PR) - C54-87 (PR) Always Below 1 Ω
      F1-2 (E2) - C54-133 (ETHW) Always Below 1 Ω
      F1-3 (PR) or C54-87 (PR) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  8

    Result: 

    OK 

    See step  5

  5. REPLACE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY LH 

    Refer to REMOVAL [12/2019 - 10/2022]

    HINT: 

    Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).

    Refer to INITIALIZATION [12/2019 - 10/2022]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  6

  6. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0190-2A OR P0190-64) 
    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    2. Read the pending DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0190-2A or P0190-64 is output B

    Result: 

    A 

    END 

    Result: 

    B 

    See step  9

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR 
    1. Repair or replace the wire harness or connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  9. REPLACE ECM 
    1. Replace the ECM.

      Refer to REMOVAL [12/2019 - 09/2020] , or refer to REMOVAL [09/2020 - 10/2022]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  10. REPLACE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY LH 

    Refer to REMOVAL [12/2019 - 10/2022]

    HINT: 

    Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).

    Refer to INITIALIZATION [12/2019 - 10/2022]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  11. REPAIR OR REPLACE FUEL LEAK POINT 
    1. Repair or replace the fuel leak point.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  13

  13. CHECK WHETHER DTC OUTPUT RECURS (DTC P0190-2A OR P0190-64) 
    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    2. Read the pending DTCs.

      Powertrain > Engine > Trouble Codes 

      OK

      DTCs are not output

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

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