Classification:

Reference:

EC19-009

Date:

NTB19-023

March 5, 2019

2017-2018 VERSA; MIL ON WITH DTC P050B
APPLIED VEHICLES:

2017-2018 Versa (N17)

IF YOU CONFIRM
The Malfunction Indicator Light (MIL) is ON with Diagnostic Trouble Code (DTC) P050B
(Cold Start Control) stored in the Engine Control Module (ECM).

ACTION
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.
Nissan 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 Nissan dealer to determine if this applies to your vehicle.

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SERVICE PROCEDURE
Reprogram the ECM
IMPORTANT: Before starting the reprogramming procedure, make sure:


ASIST on the CONSULT PC has been synchronized (updated) to the current date.



All CONSULT- III plus (C-III plus) software updates (if any) have been installed.



The CONSULT PC is connected to the Internet (Wi-Fi or cable).

NOTE:


If you are not familiar with the reprogramming procedure, click here. This will link 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:
 Engine coolant temperature: 70-100°C
(158-212°F)
 Battery voltage: More than 12.9V (At idle)
 Transmission: Warmed up



After reprogramming is complete, it is required to
perform Throttle Valve Closed Position, Idle Air
Volume Learn, Accelerator Closed Position, and
DTC Erase.
Figure 1

CAUTION:


Connect the GR8 to the 12V battery and select ECM Power Supply Mode.
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 plus VI. If Bluetooth® signal waves
are within range of the CONSULT PC and the plus VI during reprogramming,
reprogramming may be interrupted and the ECM may be damaged.

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NTB19-023

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 A, reprogram the ECM.



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

Table A
MODEL

CURRENT ECM PART NUMBER: 237109KS1A, 9KS1B, 9KS1C, 9KS1D
9KS2A, 9KS2B, 9KS2C, 9KS2D

2017 Versa

9KS3A, 9KS3B, 9KS3C, 9KS3D
9KZ0B, 9KZ0C
9KZ1B, 9KZ1C

2018 Versa

9KZ2B, 9KZ2C

2. 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:
DESCRIPTION
PFP
OP CODE
SYM
DIA
FRT
Reprogram the ECM
(1)
DE97AA
ZE
32
(2)
(1) Reference the electronic parts catalog, and use the ECM part number (23703-*****) as
the Primary Failed Part (PFP).
(2) Reference the current Nissan Warranty Flat Rate Manual and use the indicated Flat
Rate Time (FRT).
AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
March 5, 2019

NTB19-023

DESCRIPTION
Original bulletin published

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NTB19-023