2016 NISSAN NOTE Service Repair Manual

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Page 1369 of 3641

NISSAN NOTE 2016 Service Repair Manual EC-242
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0139 HO2S2
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 6.
6.REPLACE HEATED OXYGEN SENSOR 2
Replace malfunctioning heated oxygen sensor

Page 1370 of 3641

NISSAN NOTE 2016 Service Repair Manual P014C, P014D, P015A, P015B, A/F SENSOR 1EC-243
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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P014C, P014D, P015A, P015B, A/F SENSOR 1
DTC LogicINFOID:0000000012431453
DTC DETECTIO

P014C, P014D, P015A, P015B, A/F SENSOR 1EC-243
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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P014C, P014D, P015A, P015B, A/F SENSOR 1
DTC LogicINFOID:0000000012431453
DTC DETECTION LOGIC
To judge malfunctions, this diagnosis measures response time of the A/F signal co
mputed by ECM from the A/
F sensor 1 signal. The time is compensated by engi ne operating (speed and load), fuel feedback control con-
stant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F
signal cycling time index) is inordinately long or not.
DTC CONFIRMATION PROCEDURE
1.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:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
Do you have CONSULT?
YES >> GO TO 2.
NO >> GO TO 5.
2.PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1minute under no load.
6. Let engine idle for 1 minute.
7. Increase the engine speed up to about 3,600 rpm and keep it for 10 seconds.
8. Fully release accelerator pedal and then let engine idle for about 1 minute.
9. Check the items status of “DATA MONITOR” as follows. NOTE:
If “PRSNT” changed to “ABSNT”, refer to EC-151, "
Component Function Check".
Is
“PRSNT” displayed on CONSULT screen?
YES >> GO TO 4.
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
Perform DTC confirmation procedure-1 again.
Is
“PRSNT” displayed on CONSULT screen?
YES >> GO TO 4.
NO >> Refer to EC-151, "
Component Function Check".
DTC No. Trouble diagnosis content DTC detecting conditionPossible Cause
P014C Air fuel ratio (A/F) sensor 1 (bank 1) circuit slow re-
sponse • The response time of a A/F sensor 1 signal de-
lays more than the specified time computed by
ECM. • Harness or connectors
(The A/F sensor 1 circuit is open or
shorted.)
• A/F sensor 1
P014D
P015A Air fuel ratio (A/F) sensor 1
(bank 1) circuit delayed re-
sponse
P015B
Data monitor item
Status
A/F SEN1 DIAG3 (B1) PRSNT
Revision: August 2015 2016 Versa Note

cardiagn.com

Page 1371 of 3641

NISSAN NOTE 2016 Service Repair Manual EC-244
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P014C, P014D, P015A,
P015B, A/F SENSOR 1
4.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1. Wait for about 20 seconds at idle.
2. Check the items status o

Page 1372 of 3641

NISSAN NOTE 2016 Service Repair Manual P014C, P014D, P015A, P015B, A/F SENSOR 1EC-245
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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Diagnosis ProcedureINFOID:0000000012431454
1.CHECK GROUND CONNECTION
1. Turn ignition

Page 1373 of 3641

NISSAN NOTE 2016 Service Repair Manual EC-246
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P014C, P014D, P015A,
P015B, A/F SENSOR 1
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
• IPDM E/R harness connector F42
• Harness for o

Page 1374 of 3641

NISSAN NOTE 2016 Service Repair Manual P014C, P014D, P015A, P015B, A/F SENSOR 1EC-247
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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12.CHECK INTERMITTENT INCIDENT
Perform GI-42, "
Intermittent Incident".
Is the inspec

Page 1375 of 3641

NISSAN NOTE 2016 Service Repair Manual EC-248
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0171 FUEL INJECTION SYSTEM FUNCTION
P0171 FUEL INJECTIO
N SYSTEM FUNCTION
DTC LogicINFOID:0000000012431455
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio

EC-248
< DTC/CIRCUIT DIAGNOSIS >[HR16DE]
P0171 FUEL INJECTION SYSTEM FUNCTION
P0171 FUEL INJECTIO
N SYSTEM FUNCTION
DTC LogicINFOID:0000000012431455
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio f eedback signal from the A/F sensor 1. The ECM calcu-
lates the necessary compensation to correct the of fset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the
ECM judges the condition as the fuel injection system malfunction and lights up the MIL (2 trip detection logic).
DTC CONFIRMATION PROCEDURE
1.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.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Clear the mixture ratio self-learning value. Refer to EC-132, "
Description".
2. Start engine.
Is it difficult to start engine?
YES >> GO TO 3.
NO >> GO TO 4.
3.RESTART ENGINE
If it is difficult to start engine, the f uel injection system has a malfunction, too.
Crank engine while depressing accelerator pedal.
NOTE:
When depressing accelerator pedal three-fourths (3/4) or more, the control system may not start the engine.
Do not depress accelerator pedal too much.
Does engine start?
YES >> Go to EC-249, "Diagnosis Procedure".
NO >> Check exhaust and intake air leak visually.
4.PERFORM DTC CONFIRMATION PROCEDURE-II
1. Start engine and let it idle for at least 5 minutes.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-249, "Diagnosis Procedure".
Sensor Input signal to ECM ECM functionActuator
A/F sensor 1 Density of oxygen in exhaust gas
(Mixture ratio feedback signal) Fuel injection control Fuel injector
DTC No. Trouble diagnosis content
DTC detecting conditionPossible cause
P0171 Fuel injection system too
lean • Fuel injection system does not operate properly.
• The amount of mixture ratio compensation is
too large. (The mixture ratio is too lean.) • Intake air leaks
• A/F sensor 1
• Fuel injector
• Exhaust gas leaks
• Incorrect fuel pressure
• Lack of fuel
• Mass air flow sensor
• Incorrect PCV hose connection
Revision: August 2015
2016 Versa Note

cardiagn.com

Page 1376 of 3641

NISSAN NOTE 2016 Service Repair Manual P0171 FUEL INJECTION SYSTEM FUNCTIONEC-249
< DTC/CIRCUIT DIAGNOSIS > [HR16DE]
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NO >> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE-III
1. Turn ignition switch OFF and wa

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