Classification:

Reference:

Date:

EC20-004

ITB20-005

February 18, 2020

2016-2019 QX80; MIL ON WITH DTC P0174

APPLIED VEHICLES:

2016-2019 QX80 (Z62)

IF YOU CONFIRM
The MIL is ON and only DTC P0174 (FUEL SYS LEAN B2) is stored in the ECM.

ACTION

1.

Confirm the current ECM part number.

2.

Reprogram the ECM, if applicable.

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 retailer to determine if this
applies to your vehicle.

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SERVICE PROCEDURE
1.

Using C-III plus, confirm the current ECM part number and write it on the repair order.


If it matches one of the part numbers in Table 1, continue to step 2 on page 3.



If it does not match one of the part numbers in Table 1, this bulletin does not apply. Go back to
ASIST for further diagnostic and repair information.

Table 1
MODEL

YEAR

CURRENT ECM PART NUMBER 237105ZH0A, 5ZH0B, 5ZH0C
5ZH1A, 5ZH1B, 5ZH1C
5ZH2A, 5ZH2B, 5ZH2C
5ZH3A, 5ZH3B, 5ZH3C
5ZH4A, 5ZH4B, 5ZH4C
5ZH5A, 5ZH5B, 5ZH5C
5ZH6A, 5ZH6B, 5ZH6C
5ZH7A, 5ZH7B, 5ZH7C
5ZM0A, 5ZM0B, 5ZM0C, 5ZM0D, 5ZM0E
5ZM1A, 5ZM1B, 5ZM1C, 5ZM1D, 5ZM1E
5ZM2A, 5ZM2B, 5ZM2C, 5ZM2D, 5ZM2E
5ZM3A, 5ZM3B, 5ZM3C, 5ZM3D, 5ZM3E
5ZP2B, 5ZP2C, 5ZP2D, 5ZP2E
5ZP3B, 5ZP3C, 5ZP3D, 5ZP3E
5ZP4B, 5ZP4C, 5ZP4D, 5ZP4E
5ZP5B, 5ZP5C, 5ZP5D, 5ZP5E
5ZS1A, 5ZS1B, 5ZS1C
5ZS2A, 5ZS2B, 5ZS2C
5ZS3A, 5ZS3B, 5ZS3C
5ZS4A, 5ZS4B, 5ZS4C
5ZS5A, 5ZS5B, 5ZS5C
5ZS6A, 5ZS6B, 5ZS6C
5ZS7A, 5ZS7B, 5ZS7C
5ZS8A, 5ZS8B, 5ZS8C

2016

QX80

2017

6GW2B,
6GY3B,
6GY4B,
6GY5B,

2018

6GW2C, 6GW2D
6GY3C, 6GW3D
6GY4C, 6GY4D
6GY5C, 6GY5D

6JB0B, 6JB0C, 6JB0E
6JB1B, 6JB1C, 6JB1E
6JB2B, 6JB2C, 6JB2E
6JB3B, 6JB3C, 6JB3E
6JH0A, 6JH1A, 6JH2A, 6JH3A

2019

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ITB20-005

Perform the following before starting the reprogramming procedure to prevent damage to the control unit.








Connect the AC Adapter to the CONSULT PC.
Connect the CONSULT PC to the internet via Wi-Fi or a network cable.
Ensure ASIST on the CONSULT PC has been synchronized (updated) to the current date and all C-III
plus software updates (if any) have been installed.
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 or VI
during reprogramming, the reprogramming may be interrupted.
Turn OFF all vehicle electrical loads.
Turn ON the hazard warning lamps.
Connect a battery maintainer or smart charger, set to reflash mode or a similar
setting, to ensure the battery voltage stays between 12.0 V and 15.5 V.

HINT:
 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 Learning
conditions:
 Engine coolant temperature: 70 - 100 °C (158 - 212 °F)
 Battery voltage: More than 12.9 V (At idle)
 Transmission: Warmed up


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

2.

Reprogram the ECM.

3.

After completing Erase ALL DTCs, print a copy of the C-III plus screen showing the before and after part
numbers of the control unit and attach it to the repair order.

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:

(1)
(2)

DESCRIPTION
PFP
OP CODE
SYM
DIA
FRT
Reprogram the ECM
(1)
DE97AA
ZE
32
(2)
Reference the electronic parts catalog and use the ECM part number (23703-*****) as the Primary Failed
Part (PFP).
Reference the current Infiniti Warranty Flat Rate Manual and use the indicated Flat Rate Time (FRT).

AMENDMENT HISTORY
PUBLISHED DATE

REFERENCE

February 18, 2020

ITB20-005

DESCRIPTION
Original bulletin published

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ITB20-005