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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Engine Control System - Diagnostic Codes (7 Of 7) & Symptom Tests (1 Of 2)) >> SFI SYSTEM (for 1Motor-HEV Model) >> DTC P3190-00: Poor Engine Power; DTC P3191-00: Engine does not Start [09/2023 - ] >> Procedure

DTC P3190-00: Poor Engine Power; DTC P3191-00: Engine does not Start [09/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P3190-00, P3191-00 AND/OR P3193-00) 
    1. Check for DTCs and Freeze Frame Data and write them down.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      P3190-00, P3191-00 or P3193-00 and other DTCs are output A
      Only P3190-00 or P3191-00 is output B
      Only P3193-00 is output C

      HINT: 

      If any SFI system DTCs other than DTC P3190-00, P3191-00 or P3193-00 are output, perform troubleshooting for those DTCs first.

    Result: 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

    Result: 

    GO TO DTC P3193-00. Refer to  DTC P3193-00: Fuel Run Out [09/2023 - ]  

    Result: 

    See step  2

  2. CHECK SHORTAGE OF FUEL 
    1. Check the amount of fuel remaining.

      OK

      There is enough fuel.

      HINT: 

      • DTCs P3190-00, P3191-00 and/or P3193-00 may be output if the vehicle ran out of fuel in the past.
      • If not enough fuel is added, DTC P3190-00, P3191-00 or P3193-00 may be output again. If the engine cannot be started because the vehicle is out of fuel, add fuel until the fuel level warning turns off.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REFILL FUEL 

    Result: 

    OK 

    See step  3

  3. CLEAR DTC 

    Pre-procedure1

    • None
    • Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

    Post-procedure1

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

    Result: 

    NEXT 

    See step  4

  4. CHECK PCV VALVE AND HOSE CONNECTIONS 

    except Mexico Models 

    GTY1232831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    for Mexico Models 

    GTY1232720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the PCV hose connections.
    2. Check the PCV valve.

      Refer to INSPECTION [09/2023 - ]

      OK

      PCV hose and PCV valve are connected correctly and are not damaged.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE PCV VALVE OR HOSE 

    Result: 

    OK 

    See step  5

  5. CHECK INTAKE SYSTEM 
    1. Check the intake system for vacuum leaks.

      Refer to ON-VEHICLE INSPECTION [09/2023 - ]

      OK

      No leaks from intake system.

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the intake system.

      Refer to INITIALIZATION [09/2023 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  6

  6. CHECK FOR UNUSUAL NOISE OR VIBRATION WHEN STARTING ENGINE OR REVVING 

    OK

    Unusual noise and vibration do not occur.

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS 

    Result: 

    OK 

    See step  7

  7. CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE) 

    Refer to ON-VEHICLE INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FUEL PUMP (FOR LOW PRESSURE SIDE). Refer to  REMOVAL [09/2023 - ] 

    Result: 

    OK 

    See step  8

  8. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY (THROTTLE WITH THROTTLE POSITION SENSOR BODY ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

    Result: 

    OK 

    See step  9

  9. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY 
    1. Inspect the mass air flow meter sub-assembly, referring to On-vehicle Inspection for Mass Air Flow Meter.

      Refer to ON-VEHICLE INSPECTION [09/2023 - ]

    2. Inspect the mass air flow meter sub-assembly, referring to Inspection for Mass Air Flow Meter.

      Refer to INSPECTION [09/2023 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

    Result: 

    OK 

    See step  10

  10. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  REMOVAL [09/2023 - ] 

    Result: 

    OK 

    See step  11

  11. REPLACE CRANKSHAFT POSITION SENSOR 

    HINT: 

    Refer to REMOVAL [09/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  12. CLEAR DTC 

    Pre-procedure1

    • None
    • Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

    Post-procedure1

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

    Result: 

    NEXT 

    See step  13

  13. CHECK WHETHER DTC OUTPUT RECURS (DTC P3190-00 OR P3191-00) 

    Pre-procedure1

    • Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    • Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      P3190-00 or P3191-00 is output B

    Post-procedure1

    • None

    Result: 

    END 

    Result: 

    See step  14

  14. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) 

    HINT: 

    Refer to REMOVAL [09/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  15

  15. CLEAR DTC 

    Pre-procedure1

    • None
    • Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

    Post-procedure1

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

    Result: 

    NEXT 

    See step  16

  16. CHECK WHETHER DTC OUTPUT RECURS (DTC P3190-00 OR P3191-00) 

    Pre-procedure1

    • Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    • Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      P3190-00 or P3191-00 is output B

    Post-procedure1

    • None

    Result: 

    END 

    Result: 

    See step  17

  17. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) 

    HINT: 

    Refer to REMOVAL [09/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  18

  18. CLEAR DTC 

    Pre-procedure1

    • None
    • Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

    Post-procedure1

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

    Result: 

    NEXT 

    See step  19

  19. CHECK WHETHER DTC OUTPUT RECURS (DTC P3190-00 OR P3191-00) 

    Pre-procedure1

    • Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    • Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      P3190-00 or P3191-00 is output B

    Post-procedure1

    • None

    Result: 

    END 

    Result: 

    See step  20

  20. REPLACE ECM 

    HINT: 

    Refer to REMOVAL [09/2023 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  21

  21. CLEAR DTC 

    Pre-procedure1

    • None
    • Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

    Post-procedure1

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

    Result: 

    NEXT 

    See step  22

  22. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED 

    Pre-procedure1

    • Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    • Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Proceed to
      NEXT

    Post-procedure1

    • None

    Result: 

    NEXT 

    END