Classificatio n:

Reference:

Date:

EC11-024a

ITB11-054a

January 2, 2013

2011 - 2013 QX56 AND 2011 - 2012 M56;
MIL ON WITH A/F SENSOR RELATED DTC STORED
This bulletin has been amended in the APPLIED VEHICLES section and the SERVICE PROCEDURE.
Discard all previous versions of this bulletin.

APPLIED VEHICLES: 2011- 2013 QX56 (Z62)
2011- 2012 M56 (Y51)
APPLIED ENGINE: VK56VD series V8

IF YOU CONFIRM:
Any of the following DTCs are stored in the ECM:
•

P0031 / P0051, P0032 / P0052, P0130 / P0150, P0133 / P0153, P2A00 / P2A03,
P1148 / P1168

OR
Any of the following DTCs are stored in the ECM as a result of one of the A/F sensors:
•

P0300 - P0308, P0171 / P0174, P0172 / P0175

ACTION:
1. Replace the A/F sensor that relates to the stored DTC(s) (B1 and/or B2).
2. Refer to step 7 in the SERVICE PROCEDURE to confirm if ECM reprogramming applies.
3. If it applies, reprogram the ECM.

IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to
successfully completing this repair.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe
that a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti dealer to determine if this
applies to your vehicle.
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PARTS INFORMATION
MODEL

DESCRIPTION

PART NUMBER

QTY

2011 - 2012 M56

SENSOR ASSY AIR FUEL RATIO

22693-1MC0A

1 (per bank)

2011 - 2013 QX56

SENSOR ASSY AIR FUEL RATIO

22693-1LA0C

1 (per bank)

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
Replace A/F Sensor (M56)
One
DESCRIPTION
PFP
OP CODE
SYM
Replace A/F sensor
(1)
DE53AA
HD
(1) Use the appropriate part number listed above in the parts information table.
(2) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated FRT.

DIA
32

FRT
(2)

DIA
32

FRT
(2)

DIA
32

FRT
(2)

DIA
32

FRT
(2)

Or
Both
DESCRIPTION
PFP
OP CODE
SYM
Replace A/F sensor
(1)
DE55AA
HD
(1) Use the appropriate part number listed above in the parts information table.
(2) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated FRT.
Replace A/F Sensor (QX56)
One
DESCRIPTION
PFP
OP CODE
SYM
Replace A/F sensor
(1)
DE53AA
HD
(1) Use the appropriate part number listed above in the parts information table.
(2) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated FRT.
Or
Both
DESCRIPTION
PFP
OP CODE
SYM
Replace A/F sensor
(1)
DE55AA
HD
(1) Use the appropriate part number listed above in the parts information table.
(2) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated FRT.
And on the same repair line if the ECM is reprogrammed:
DESCRIPTION
OP CODE
SYM
DIA
FRT
Reprogram ECM
DE97AA
ZE
32
(1) (2)
(1) Reference the current Infiniti Warranty Flat Rate Manual and use the indicated FRT.
(2) FRT allows adequate time to access DTC codes and reprogram ECM. No other diagnostic
procedures subsequently required. Do NOT claim any Diagnostic Op Codes with this claim.

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SERVICE PROCEDURE
1. Replace the A/F sensor on the affected bank (related to the stored DTC).
•

For replacement procedure, refer to the appropriate Electronic Service Manual (ESM).

2. Next, connect the CONSULT PC to the vehicle to begin the reprogramming procedure.
NOTE:
•

Most instructions for reprogramming with CONSULT-III plus (C-III plus) are displayed on the CONSULT
PC screen.

•

If you are not familiar with the reprogramming procedure, click here. This will link you to the
"CONSULT- III plus (C-III plus) ECM Reprogramming" general procedure.

•

Take the vehicle for a 10 minute drive in order to meet the following Idle Air Volume Learn (IAVL)
conditions:

¾ Engine coolant temperature: 70 -100°C
(158 - 212°F)
¾ Battery voltage: More than 12.9V (At idle)
¾ Transmission: Warmed up
Figure A
•

After reprogramming is complete, you will be required to perform Throttle Valve Closed Position, Idle
Air Volume Learn, Accelerator Closed Position, and DTC erase.

CAUTION:
•

Connect a battery charger to the vehicle battery. If the vehicle battery voltage drops
below 12.0V or above 15.5V during reprogramming, the ECM may be damaged.

•

Be sure to turn OFF all vehicle electrical loads. If a vehicle electrical load remains ON,
the ECM may be damaged.

•

Be sure to connect the AC Adapter. If the CONSULT PC battery voltage drops during
reprogramming, the process will be interrupted and the ECM may be damaged.

•

Turn off all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the VI. If Bluetooth® signal waves are within range of the CONSULT PC
during reprogramming, reprogramming may be interrupted and the ECM may be damaged.

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3. Open ASIST on the CONSULT PC and start C-III plus.
4. Wait for the plus VI to be recognized / connected.
•

The serial number will display when the plus VI is recognized / connected.

5. Select Re/programming, Configuration.

VI is
recognized

Step
5

Figure 1

6. Follow the on-screen instructions and navigate C-III plus to the screen shown in Figure 2 on the next page.

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7. When you get to the screen shown in Figure 2, confirm ECM reprogramming applies as follows.
A. Find the ECM Part Number and write it on the repair order.
NOTE: This is the current ECM Part Number (P/N).

7A: Current ECM P/N

Figure 2

B. Compare the P/N you wrote down to the numbers in the Current ECM Part Number column in
Table A on the next page.
•

If there is a match, the ECM needs to be reprogrammed. Continue with the reprogramming
procedure.

•

If there is not a match, the ECM does not need to be reprogrammed. Close C-III plus – repairs
are completed.

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Table A
MODEL

2011 M56

2012 M56

2011 QX56

2012 QX56

2013 QX56

VEHICLE CONFIGURATION

Current ECM Part Number: 23710-

2WD_ASCD

1MX0A, 1MX0B, 1MX0C, 1MX0D, 1MX0E

2WD_ICC

1MX1A, 1MX1B, 1MX1C, 1MX1D, 1MX1E

2WD_4WAS_ASCD

1MX2A, 1MX2B, 1MX2C, 1MX2D, 1MX2E

2WD_4WAS _ICC

1MX3A, 1MX3B, 1MX3C, 1MX3D, 1MX3E

4WD_ASCD

1MX4A, 1MX4B, 1MX4C, 1MX4D, 1MX4E

4WD_ICC

1MX5A, 1MX5B, 1MX5C, 1MX5D, 1MX5E

2WD_ASCD

1MU0A, 1MU0B

2WD_ICC

1MU1A, 1MU1B

2WD_4WAS_ASCD

1MU2A, 1MU2B

2WD_4WAS_ICC

1MU3A, 1MU3B

4WD_ASCD

1MU4A, 1MU4B

4WD_ICC

1MU5A, 1MU5B

2WD_ASCD

1LA3B, 1LA3C, 1LA3D, 1LA3E, 1LS0A, 1LS0B

2WD_ICC

1LA4B, 1LA4C, 1LA4D, 1LA4E, 1LS1A, 1LS1B

4WD_ASCD

1LA5B, 1LA5C, 1LA5D, 1LA5E, 1LS2A, 1LS2B

4WD_ICC

1LA6B, 1LA6C, 1LA6D, 1LA6E, 1LS3A, 1LS3B

2WD_ASCD

1ZS0A, 1ZS0B, 1ZS0C, 1ZS0D

2WD_ICC

1ZS1A, 1ZS1B, 1ZS1C, 1ZS1D

4WD_ASCD

1ZS2A, 1ZS2B, 1ZS2C, 1ZS2D

4WD_ICC

1ZS3A, 1ZS3B, 1ZS3C, 1ZS3D

2WD_ASCD

1V92A

2WD_ICC

1V93A

4WD_ASCD

1V90A

4WD_ICC

1V91A

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8. Follow the on-screen instructions to navigate C-III plus and reprogram the ECM.
NOTE:
•

In some cases, more than one new P/N for reprogramming is available.
¾ In this case, the screen in Figure 3 displays.
¾ Select and use the reprogramming option that does not have the message “Caution! Use ONLY
with ITBXX-XXX”.

•

If you get this screen and it is blank (no reprogramming listed), it means there is no reprogramming
available for this vehicle. Close C-III plus – repairs are completed.
IMPORTANT: If C-III plus locks up or freezes at this point or displays “cannot complete
reprogramming, CONSULT PC is set up with User Rights. Reprogramming can be completed with
Administrator log in”, the TOUGHBOOK settings need to be changed so that Users have full access
rights. See your Dealership’s IT System Administrator for details.

Figure 3

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9. When the screen in Figure 4 displays, reprogramming is complete.
NOTE: If the screen in Figure 4 does not display (reprogramming does not complete), refer to the
information on page 9.
10. Disconnect the battery charger from the vehicle.
11. Select Next.

Step
11

Figure 4

NOTE:
•

In the next steps, starting on page 10, you will perform Throttle Valve Closed Position, Idle Air Volume
Learn, Accelerator Closed Position, and DTC erase.

•

These operations are required before C-III plus will provide the final reprogramming confirmation
report.

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ECM Recovery
Do not disconnect plus VI or shut down Consult III plus if reprogramming does not complete.
If reprogramming does not complete and the “!?” icon displays as shown in Figure 5:

•

Check battery voltage
(12.0–15.5 V).

•

Ignition is ON, engine OFF.

•

External Bluetooth® devices are
OFF.

•

All electrical loads are OFF.

•

Select retry and follow the on
screen instructions.

•

“Retry” may not go through on first
attempt and can be selected more
than once.
Figure 5

If reprogramming does not complete and the “X” icon displays as shown in Figure 6:

•

Check battery voltage
(12.0 – 15.5 V).

•

CONSULT A/C adapter is plugged
in.

•

Ignition is ON, engine OFF.

•

Transmission is in Park.

•

All C-III plus / VI cables are securely
connected.

•

All C-III plus updates are installed.

•

Select Home, and restart the
reprogram procedure from the
beginning.
Figure 6

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12. Follow the on-screen instructions to perform the following:
•

Throttle Valve Closed Position

•

Idle Air Volume Learn (IAVL)
NOTE:
o Listed below are common conditions required for IAVL to complete.
o If IAVL does not complete within a few minutes, a condition may be out of range.
o Refer to the appropriate Electronic Service Manual (ESM) for specific conditions required
for the vehicle you are working on.
¾ Engine coolant temperature: 70-100° C (158- 212°F)
¾ Battery voltage: More than 12.9V (At idle)
¾ Selector lever: P or N
¾ Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
¾ Steering wheel: Neutral (Straight-ahead position)
¾ Vehicle speed: Stopped
¾ Transmission: Warmed up

•

Accelerator Pedal Close Position Learning

•

Erase DTCs

Continue to the next page.

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13. When the entire reprogramming process is complete, the screen in Figure 7 will display.
14. Verify the before and after part numbers are different.
15. Print a copy of this screen (Figure 7) and attach it to the repair order for warranty documentation.
16. Select Confirm.

Step
14

Step
15

Step
16

Figure 7
17. Close C-III plus.
18. Turn the ignition OFF.
19. Disconnect the plus VI from the vehicle.
20. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
•

If the MIL comes ON, go back to ASIST for further diagnostic information.

•

Diagnosis and repairs beyond ECM reprogramming are not covered by this bulletin.

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