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Home >> Toyota >> 2019 >> Yaris LE >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (4 Of 13) >> SFI System >> DTC P0134-00: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) [08/2018 - ] >> Procedure
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DTC P0134-00: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) [08/2018 - ]: Procedure

  1. VISUALLY INSPECT ECM CONNECTOR 
    1. Perform the ECM connector Inspection.
    2. Inspect the ECM connector pin type.

      Result

      Result
      200 Pin Type
      186 Pin Type

    Result: 

    186 Pin Type 

    See step  17

    Result: 

    200 Pin Type 

    See step  2

  2. PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 02) 
    1. Is the DTC P013400 on FREEZE FRAME DATA (Mode 02)?

      Result

      Result
      Yes
      No

    Result: 

    No 

    GO TO THE TROUBLESHOOTING PROCEDURE FOR DTC ON FREEZE FRAME DATA (MODE 02). 

    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]

    Result: 

    Yes 

    See step  3

  3. PURPOSE: VERIFY DTC 
    1. Switch the ignition off, then ON (engine off).
    2. Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Trouble Codes 

    3. Are any DTCs present?

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  16

    Result: 

    No 

    See step  4

  4. PURPOSE: PERFORM DTC INSPECTION RELATED TO A/F SENSOR OPEN CIRCUIT 
    1. Perform the DTC P224300 and DTC P225100 procedure.

      Refer to DTC P2243-00: O2 Sensor Reference Voltage Circuit/Open - Bank 1, Sensor 1 [08/2018 - ]

      Refer to DTC P2251-00: O2 Sensor Negative Current Control Circuit/Open - Bank 1, Sensor 1 [08/2018 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. PURPOSE: VERIFY A/F SENSOR INPUT SIGNAL 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up completely.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1).

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Data List 

      Tester Display
      Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1)
    5. Drive the vehicle under the following conditions.
      WARNING:
      • When the Techstream is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the Techstream using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
      • While performing this step, always operate the vehicle in a safe and lawful manner.
      1. After increasing the engine speed to 3000 rpm, decelerate using engine braking.
    6. Is the displayed PID value as follows?
      1. Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1): 0.25 mA or more

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  8

    Result: 

    No 

    See step  6

  6. PURPOSE: INSPECT RELATED SENSOR WIRING HARNESS AND CONNECTOR 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1).

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Data List 

      Tester Display
      Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1)
    5. Does the PID value fluctuate when the ECM and A/F sensor connectors are shaken?

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  15

    Result: 

    No 

    See step  7

  7. PURPOSE: INSPECT INSTALLATION OF A/F SENSOR 
    1. Inspect installation of A/F sensor.
    2. Is the A/F sensor installed securely?

      Result

      Result
      Yes
      No

    Result: 

    No 

    See step  13

    Result: 

    Yes 

    See step  14

  8. PURPOSE: INSPECT INSTALLATION OF A/F SENSOR 
    1. Inspect installation of A/F sensor.
    2. Is the A/F sensor installed securely?

      Result

      Result
      Yes
      No

    Result: 

    No 

    See step  12

    Result: 

    Yes 

    See step  9

  9. PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION 
    1. Always reconnect all disconnected connectors.
    2. Clear the DTC from the ECM memory using the Techstream.

      Refer to CLEARING DTC [07/2015 - ]

      Powertrain > Engine > Clear DTCs 

    3. Implement the repeatability verification procedure.
    4. Perform the Pending Trouble Code Access Procedure.

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Trouble Codes 

    5. Is the PENDING CODE for this DTC present?

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  11

    Result: 

    No 

    See step  10

  10. PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION 
    1. Is any other DTC or pending code stored?

      Result

      Result
      Yes
      No

    Result: 

    No 

    DTC TROUBLESHOOTING COMPLETED. 

    Result: 

    Yes 

    GO TO THE APPLICABLE DTC INSPECTION. 

    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]
  11. REPEAT THE INSPECTION FROM STEP 7. 
    1. If the malfunction recurs, replace the ECM.

      Refer to REMOVAL [07/2015 - ]

    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  12. RETIGHTEN THE A/F SENSOR. 
    1. Refer to INSTALLATION [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  13. RETIGHTEN THE A/F SENSOR. 
    1. Refer to INSTALLATION [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  14. REPLACE THE A/F SENSOR. 
    1. Refer to REMOVAL [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  15. INSPECT THE RELATED WIRING HARNESS AND CONNECTOR. 
    1. Repair or replace the malfunctioning part.
    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  16. GO TO THE APPLICABLE DTC INSPECTION. 
    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]
    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  17. PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA 
    1. Is the DTC P013400 on FREEZE FRAME DATA?

      Result

      Result
      Yes
      No

    Result: 

    No 

    GO TO THE TROUBLESHOOTING PROCEDURE FOR DTC ON FREEZE FRAME DATA. 

    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]

    Result: 

    Yes 

    See step  18

  18. PURPOSE: VERIFY DTC 
    1. Switch the ignition off, then ON (engine off).
    2. Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Trouble Codes 

    3. Are any DTCs present?

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  31

    Result: 

    No 

    See step  19

  19. PURPOSE: PERFORM DTC INSPECTION RELATED TO A/F SENSOR OPEN CIRCUIT 
    1. Perform the DTC P224300 and DTC P225100 procedure.

      Refer to DTC P2243-00: O2 Sensor Reference Voltage Circuit/Open - Bank 1, Sensor 1 [08/2018 - ]

      Refer to DTC P2251-00: O2 Sensor Negative Current Control Circuit/Open - Bank 1, Sensor 1 [08/2018 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  20

  20. PURPOSE: VERIFY A/F SENSOR INPUT SIGNAL 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up completely.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1).

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Data List 

      Tester Display
      Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1)
    5. Drive the vehicle under the following conditions.
      WARNING:
      • When the Techstream is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the Techstream using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
      • While performing this step, always operate the vehicle in a safe and lawful manner.
      1. After increasing the engine speed to 3000 rpm, decelerate using engine braking.
    6. Is the displayed PID value as follows?
      1. Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1): 0.25 mA or more

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  23

    Result: 

    No 

    See step  21

  21. PURPOSE: INSPECT RELATED SENSOR WIRING HARNESS AND CONNECTOR 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1).

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Data List 

      Tester Display
      Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 1)
    5. Does the PID value fluctuate when the ECM and A/F sensor connectors are shaken?

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  30

    Result: 

    No 

    See step  22

  22. PURPOSE: INSPECT INSTALLATION OF A/F SENSOR 
    1. Inspect installation of A/F sensor.
    2. Is the A/F sensor installed securely?

      Result

      Result
      Yes
      No

    Result: 

    No 

    See step  28

    Result: 

    Yes 

    See step  29

  23. PURPOSE: INSPECT INSTALLATION OF A/F SENSOR 
    1. Inspect installation of A/F sensor.
    2. Is the A/F sensor installed securely?

      Result

      Result
      Yes
      No

    Result: 

    No 

    See step  27

    Result: 

    Yes 

    See step  24

  24. PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION 
    1. Always reconnect all disconnected connectors.
    2. Clear the DTC from the ECM memory using the Techstream.

      Refer to CLEARING DTC [07/2015 - ]

      Powertrain > Engine > Clear DTCs 

    3. Implement the repeatability verification procedure.
    4. Perform the Pending Trouble Code Access Procedure.

      Refer to ON-BOARD DIAGNOSTIC TEST [07/2015 - ]

      Powertrain > Engine > Trouble Codes 

    5. Is the PENDING CODE for this DTC present?

      Result

      Result
      Yes
      No

    Result: 

    Yes 

    See step  26

    Result: 

    No 

    See step  25

  25. PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION 
    1. Is any other DTC or pending code stored?

      Result

      Result
      Yes
      No

    Result: 

    No 

    DTC TROUBLESHOOTING COMPLETED. 

    Result: 

    Yes 

    GO TO THE APPLICABLE DTC INSPECTION. 

    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]
  26. REPEAT THE INSPECTION FROM STEP 22. 
    1. If the malfunction recurs, replace the ECM.

      Refer to REMOVAL [07/2015 - ]

    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  22

  27. RETIGHTEN THE A/F SENSOR. 
    1. Refer to INSTALLATION [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  25

  28. RETIGHTEN THE A/F SENSOR. 
    1. Refer to INSTALLATION [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  24

  29. REPLACE THE A/F SENSOR. 
    1. Refer to REMOVAL [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  24

  30. INSPECT THE RELATED WIRING HARNESS AND CONNECTOR. 
    1. Repair or replace the malfunctioning part.
    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  24

  31. GO TO THE APPLICABLE DTC INSPECTION. 
    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2018 - 08/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ]
    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  19

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