Nissan Rogue (T33) 2021-Present Service Manual: P0139 Ho2s2

DTC Description

DTC DETECTION LOGIC

The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst 1 causes the longer switching time. To judge the malfunctions of heated oxygen sensor 2, ECM monitors whether the switching response of the sensor's voltage is faster than specified during various driving conditions such as fuel cut.

POSSIBLE CAUSE

• Harness or connectors (The sensor circuit is open or shorted.)

• Heated oxygen sensor 2

• Fuel system

• EVAP system

• Intake air system

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

DTC PRIORITY

If DTC P0139 is detected with DTC P0137 or P0138 perform trouble diagnosis for DTC P0137 or P0138 .

Is applicable DTC detected?

Perform diagnosis of applicable.

• DTC P0137: Refer to DTC Description.

• DTC P0138: Refer to DTC Description.

GO TO 2.

INSPECTION START

Do you have CONSULT?

Do you have CONSULT?

GO TO 3.

GO TO 9.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30°C (32 to 86°F).

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.

2. Start engine and warm it up to the normal operating temperature.

3. Turn ignition switch OFF and wait at least 10 seconds.

4. Turn ignition switch ON.

5. Turn ignition switch OFF and wait at least 10 seconds.

6. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

7. Let engine idle for 1 minute.

8. Make sure that “COOLANT TEMP/S” indicates more than 70°C (158°F).

9. Drive the Nissan Ariya vehicle in a proper at 60 km/h (38MPH) and maintain the speed.

   CAUTION:

   Always drive vehicle at a safe speed.

10. Release the accelerator pedal fully at least 5 seconds.

    CAUTION:

    • Enable engine brake.

    • Always drive carefully.

    • Never apply brake when releasing the accelerator pedal.

11. Repeat step 9 and 10 at least 8 times.

12. Check the following item of “DATA MONITOR”.

    Data monitor item	Status
    HO2 S2 DIAG1 (B1)	CMPLT
    HO2 S2 DIAG2 (B1)

Is “CMPLT” displayed on CONSULT screen?

GO TO 7.

Perform DTC confirmation procedure again.

GO TO 5.

PERFORM DTC WORK SUPPORT

1. Open engine hood.

2. Select “HO2S2 (B1) P0139” in “DTC WORK SUPPORT” mode of “ENGINE” using CONSULT.

3. Start engine and follow the instruction of CONSULT display.

   NOTE:

   It will take at most 10 minutes until “COMPLETED” is displayed.

Is “COMPLETED” displayed on CONSULT screen?

GO TO 7.

GO TO 6.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

1. Turn ignition switch OFF and leave the Nissan Ariya vehicle in a cool place (soak the vehicle).

2. Perform DTC confirmation procedure again.

GO TO 4.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform ECM self-diagnosis.

Is DTC “P0139” detected?

Proceed to DTC Diagnosis Procedure.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: GO TO 8.

ERASE DTC

Erase DTC of ECM

INSPECTION END

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to Component Function Check.

NOTE:

Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: GO TO 10.

Refer to DTC Diagnosis Procedure.

ERASE DTC

Erase DTC of ECM

INSPECTION END

DTC Diagnosis Procedure

DTC PRIORITY

If DTC P0139 is detected with DTC P0137 or P0138 perform trouble diagnosis for DTC P0137 or P0138 .

Is applicable DTC detected?

Perform diagnosis of applicable.

• DTC P0137: Refer to DTC Description.

• DTC P0138: Refer to DTC Description.

GO TO 2.

CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

1. Clear the mixture ratio self-learning value. Refer to Description.

2. Run engine for at least 10 minutes at idle speed.

Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?

Perform trouble diagnosis for DTC P0171 or P0172. DTC Description or DTC Description

GO TO 3.

CHECK HO2S2 GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect heated oxygen sensor 2 harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between HO2S2 harness connector and ECM harness connector.

   +		−		Continuity
   HO2S2		ECM
   Connector	Terminal	Connector	Terminal
   F67	1	F71	97	Existed

5. Also check harness for short to power.

Is the inspection result normal?

GO TO 4.

Repair or replace error-detected parts.

CHECK HO2S2 INPUT SIGNAL CIRCUIT

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

   +		−		Continuity
   HO2S2		ECM
   Connector	Terminal	Connector	Terminal
   F67	2	F71	92	Existed

2. Check the continuity between HO2S2 harness connector and ground, or ECM harness connector and ground.

   +		−	Continuity
   HO2S2
   Connector	Terminal
   F67	2	Ground	Not existed

   +		−	Continuity
   ECM
   Connector	Terminal
   F71	92	Ground	Not existed

3. Also check harness for short to power.

Is the inspection result normal?

GO TO 5.

Repair or replace error-detected parts.

CHECK HEATED OXYGEN SENSOR 2

Check the heated oxygen sensor 2. Refer to Component Inspection.

Is the inspection result normal?

Check intermittent incident. Refer to Intermittent Incident.

GO TO 6.

REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2. Refer to Exploded View.

INSPECTION END