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DTC P0140-00: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) [07/2015 - ]: Procedure

  1. PURPOSE: VERIFY CONNECTOR CONNECTIONS 
    1. Start the engine.
    2. Access the following PIDs using the Techstream:

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

      1. Heated Exhaust Gas Oxygen Sensor Heater (bank 1, sensor 2)
      2. Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2)
    3. When the following parts are shaken, does the PID value include a PID item which has changed?
      1. HO2S
      2. ECM

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  25

    Result:  1

    No 

    See step  2

  2. PURPOSE: VERIFICATION IF MALFUNCTION CAUSED BY HO2S 
    1. Start the engine and idle it.
    2. Access the Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2) PID using the Techstream.

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

    3. Is the Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2) PID value normal?

      Refer to INSPECTION [07/2015 - ]

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  4

    Result:  1

    Yes 

    See step  3

  3. PURPOSE: VERIFICATION IF MALFUNCTION CAUSED BY HO2S HEATER 
    1. Start the engine and idle it.
    2. Access the Heated Exhaust Gas Oxygen Sensor Heater (bank 1, sensor 2) PID using the Techstream.

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

    3. Is the Heated Exhaust Gas Oxygen Sensor Heater (bank 1, sensor 2) PID value normal?

      Refer to INSPECTION [07/2015 - ]

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  12

    Result:  1

    Yes 

    See step  4

  4. PURPOSE: INSPECT HO2S CONNECTOR CONDITION 
    1. Switch the ignition off.
    2. Disconnect the HO2S connector.
    3. Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
    4. Is there any malfunction?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  24

    Result:  1

    No 

    See step  5

  5. PURPOSE: INSPECT ECM CONNECTOR CONDITION 
    1. Disconnect the ECM connector.
    2. Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
    3. Is there any malfunction?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  23

    Result:  1

    No 

    See step  6

  6. PURPOSE: INSPECT HO2S SIGNAL CIRCUIT FOR SHORT TO GROUND 
    1. Verify that the HO2S and ECM connectors are disconnected.
    2. Inspect for continuity between HO2S terminal E4-2 (wiring harness-side) and body ground.
    3. Is there continuity?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  22

    Result:  1

    No 

    See step  7

  7. PURPOSE: INSPECT HO2S CIRCUIT FOR OPEN CIRCUIT 
    1. Verify that the HO2S and ECM connectors are disconnected.
    2. Inspect for continuity between HO2S terminal E4-2 (wiring harness-side) and ECM terminal A42-41 (wiring harness-side).
    3. Is there continuity?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  21

    Result:  1

    Yes 

    See step  8

  8. PURPOSE: INSPECT INSTALLATION OF HO2S 
    1. Verify the installation condition of the HO2S (installation angle, tightening torque value).

      Refer to INSTALLATION [07/2015 - ]

    2. Is the HO2S installed securely?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  20

    Result:  1

    Yes 

    See step  9

  9. PURPOSE: DETERMINE INTEGRITY OF HO2S 
    1. Reconnect all disconnected connectors.
    2. Inspect the HO2S.

      Refer to INSPECTION [07/2015 - ]

    3. Is there any malfunction?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  19

    Result:  1

    No 

    See step  10

  10. PURPOSE: VERIFY IF MALFUNCTION RELATED TO EMISSION SYSTEM AFFECTS HO2S SIGNAL 
    1. Verify the exhaust gas leakage from the exhaust system. (between A/F sensor and HO2S)
    2. Is there any malfunction?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  18

    Result:  1

    No 

    See step  11

  11. PURPOSE: VERIFY IF MALFUNCTION RELATED TO ENGINE COMPRESSION AFFECTS DIAGNOSTIC RESULTS 
    1. Inspect the engine compression.

      Refer to INSPECTION [07/2015 - ]

    2. Are compression pressures within specification?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  17

    Result:  1

    Yes 

    See step  12

  12. PURPOSE: DETERMINE INTEGRITY OF HO2S HEATER 
    1. Inspect the HO2S heater.

      Refer to INSPECTION [07/2015 - ]

    2. Is there any malfunction?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  16

    Result:  1

    No 

    See step  13

  13. 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 - ]

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

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

    5. Is the PENDING CODE for this DTC present?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  15

    Result:  1

    No 

    See step  14

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

      Result

      Result
      Yes
      No

    Result:  1

    No 

    DTC TROUBLESHOOTING COMPLETED. 

    Result:  2

    Yes 

    GO TO THE APPLICABLE DTC INSPECTION. 

    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [07/2015 - ]
  15. REPEAT THE INSPECTION FROM STEP 4. 
    1. If the malfunction recurs, replace the ECM.

      Refer to REMOVAL [07/2015 - ]

    2. Go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  4

  16. REPLACE THE HO2S. 
    1. Refer to REMOVAL [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  17. REPLACE OR OVERHAUL THE ENGINE. 
    1. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  18. REPAIR OR REPLACE THE MALFUNCTIONING PART ACCORDING TO THE INSPECTION RESULTS. 
    1. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  19. REPLACE THE HO2S. 
    1. Refer to REMOVAL [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  20. RETIGHTEN THE HO2S. 
    1. Refer to INSTALLATION [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  21. REFER TO THE WIRING DIAGRAM AND VERIFY WHETHER OR NOT THERE IS A COMMON CONNECTOR BETWEEN HO2S TERMINAL E4-2 AND ECM TERMINAL A42-41. 

    If there is a common connector: 

    • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
    • Repair or replace the malfunctioning part.

    If there is no common connector: 

    • Repair or replace the wiring harness which has an open circuit.
    1. Go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  22. REFER TO THE WIRING DIAGRAM AND VERIFY WHETHER OR NOT THERE IS A COMMON CONNECTOR BETWEEN HO2S TERMINAL E4-2 AND ECM TERMINAL A42-41. 

    If there is a common connector: 

    • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
    • Repair or replace the malfunctioning part.

    If there is no common connector: 

    • Repair or replace the wiring harness which has a short to ground.
    1. Go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  23. REPLACE THE ECM. 
    1. Refer to REMOVAL [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  24. REPLACE THE HO2S. 
    1. Refer to REMOVAL [07/2015 - ]
    2. Then go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

  25. REPAIR OR REPLACE THE APPLICABLE CONNECTOR PARTS. 
    1. Go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  13

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