Nissan Tiida C11. Manual - part 380

EC-170

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

P0139 HO2S2

P0139 HO2S2

Description

INFOID:0000000001670936

The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the heated oxygen sensor 1 are
shifted, the air-fuel ratio is controlled to stoichiometric, by the signal
from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.

DTC Logic

INFOID:0000000001670937

DTC DETECTION LOGIC

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

DTC CONFIRMATION PROCEDURE

1.

INSPECTION START

Do you have CONSULT-III?
Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 11.

2.

PRECONDITIONING

“COMPLETED” will appear on CONSULT-III screen when all tests “COND1”, “COND2” and “COND3” are
completed.
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION
For the best results, perform DTC WORK SUPPORT at a temperature of 0 to 30

°

C (32 to 86

°

F).

Never stop engine during this procedure. If the engine is stopped, retry this procedure from PERFORM PRO-
CEDURE FOR COND1 - II.

SEF327R

SEF302U

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0139

Heated oxygen sensor 2 
circuit slow response

It takes more time for the sensor to respond be-
tween rich and lean than the specified time.

• Harness or connectors

(The sensor circuit is open or shorted)

• Heated oxygen sensor 2
• Fuel pressure
• Fuel injector
• Intake air leaks

P0139 HO2S2

EC-171

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

C

D

E

F

G

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N

P

O

>> GO TO 3.

3.

PERFORM PROCEDURE FOR COND1-I

Start engine and warm it up to normal operating temperature.

>> GO TO 4.

4.

PERFORM PROCEDURE FOR COND1-II

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 5.

5.

PERFORM PROCEDURE FOR COND1-III

1.

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

2.

Let engine idle 1 minute.

3.

Select “HO2S2 (B1) P0139” of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-III.

4.

Touch “START”.

5.

Start engine and let it idle for at least 30 seconds.

6.

Rev engine up to 2,000 rpm two or three times quickly under no load.

Is “CONPLETED” appears on CONSULT-III screen?

YES 

>> GO TO 9.

NO

>> GO TO 6.

6.

PERFORM PROCEDURE FOR COND1-IV

When the following conditions are met, “TESTING” will be displayed at “COND1” on the CONSULT-III screen.
Maintain the condition continuously until “TESTING” changes to “COMPLETED” (It will take approximately 60
seconds.)

Which displayed on CONSULT-III screen?

COND1: OUT OF CONDITION>>GO TO 4.
COND1: COMPLETED COND2: INCOMPLETED>>GO TO 7.
COND1: COMPLETED COND2: COMPLETED>>GO TO 8.

7.

PERFORM PROCEDURE FOR COND2

While driving, release accelerator pedal completely from the above condition until “INCOMPLETED” at
“COND2” on CONSULT-III screen has turned to “COMPLETED”. (It will take approximately 4 seconds.)

Which displayed on CONSULT-III screen?

COND2: COMPLETED COND3: INCOMPLETED>>GO TO 8.
COND2: COMPLETED COND3: COMPLETED>>GO TO 9.

8.

PERFORM PROCEDURE FOR COND3-I

Stop vehicle and let it idle until “INCOMPLETED” of “COND3” on CONSULT-III screen has turned to “COM-
PLETED”. (It will take a maximum of approximately 6 minutes.)

>> GO TO 9.

9.

PERFORM PROCEDURE FOR COND3-II

Touch “SELF DIAGRESULTS”.

Which displayed on CONSULT-III screen?

OK

>> INSPECTION END

NG >> Go 

to 

EC-173, "Diagnosis Procedure"

.

CAN NOT BE DIAGNOSED>>GO TO 10.

ENG SPEED

More than 1,000 rpm

B/FUEL SCHDL

More than 1.0 msec

COOLAN TEMP/S

More than 70

°

C (158

°

F)

Shift level

Suitable position

EC-172

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

P0139 HO2S2

10.

PERFORM PROCEDURE FOR COND3-III

1.

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

2.

Turn ignition switch ON and select “COOLAN TEMP/S” in “DATA MONITOR” mode with CONSULT-III.

3.

Start engine and warm it up while monitoring “COOLAN TEMP/S” indication on CONSULT-III.

4.

When “COOLAN TEMP/S” indication reaches to 70

°

C (158

°

F).

>> GO TO 5.

11.

PREFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-172, "Component Function Check"

.

NOTE:
Use component function 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?

YES

>> INSPECTION END

NO

>> Go to 

EC-173, "Diagnosis Procedure"

.

Component Function Check

INFOID:0000000001670938

1.

PERFORM COMPONENT FUNCTION CHECK-I

Without CONSULT-III

1.

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

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

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

4.

Let engine idle for 1 minute.

5.

Check the voltage between ECM harness connector terminals as follows under the following condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

PERFORM COMPONENT FUNCTION CHECK-II

Check the voltage between ECM harness connector terminals as follows under the following condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

PERFORM COMPONENT FUNCTION CHECK-III

Check the voltage between ECM harness connector terminals as follows under the following condition.

(+)

(–)

Condition

Voltage

Connector

Terminal

Connector

Terminal

F11

50

(HO2S2 signal)

F11

59

Revving up to 4,000 rpm un-
der no load at least 10 times

A change of voltage should be more than 0.12 
V for 1 second during this procedure.

(+)

(–)

Condition

Voltage

Connector

Terminal

Connector

Terminal

F11

50

(HO2S2 signal)

F11

59

Keeping engine speed at idle 
for 10 minutes

A change of voltage should be more than 
0.12 V for 1 second during this procedure.

(+)

(–)

Condition

Voltage

Connector

Terminal

Connector

Terminal

F11

50

(HO2S2 signal)

F11

59

Coasting from 80 km/h (50 MPH) in D 
position (A/T), 4rd gear position (M/T)

A change of voltage should be 
more than 0.12 V for 1 second 
during this procedure.

P0139 HO2S2

EC-173

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

C

D

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G

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EC

N

P

O

iAlways drive vehicle at a safe speed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-173, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001670939

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E15. Refer to Ground Inspection in 

GI-58, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

1.

Clear the mixture ratio self-learning value. Refer to 

EC-29, "MIXTURE RATIO SELF-LEARNING VALUE

CLEAR : Special Repair Requirement"

.

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?

YES

>> Perform trouble diagnosis for DTC P0171 or P0172. Refer to 

EC-179, "DTC Logic"

 or 

EC-183,

"DTC Logic"

.

NO

>> GO TO 3.

3.

CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

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.

5.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

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

2.

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

3.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK HEATED OXYGEN SENSOR 2

HO2S2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F13

1

F11

59

Existed

HO2S2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F13

4

F11

50

Existed

HO2S2

ECM

Ground

Continuity

Connector

Terminal

Connector

Terminal

F13

4

F11

50

Ground

Not existed