Service bulletin ITB23-022

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10240534
Published by NHTSA	2023-08-08
Manufacturer's number	ITB23-022
Manufacturer's date	2023-07-11
NHTSA component	POWER TRAIN

NHTSA's summary

DTC P0744 STORED IN THE TCM IF YOU CONFIRM DTC P0744 (TORQUE CONVERTER) is stored as PAST or CURRENT in the TCM. ACTION Follow the SERVICE PROCEDURE in this bulletin to reprogram the TCM.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P0744

Vehicles listed
INFINITI Q50	2017, 2018, 2019, 2020
INFINITI Q60	2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2024362	2024-06-21. Powertrain
24V470000	2024-06-21. POWER TRAIN:DRIVELINE:DRIVESHAFT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
ITB13-008D	2023-04-04. Service bulletin. CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB22-041	2022-12-06. Service bulletin. DRIVE SHAFT BOOT SERVICE INFORMATION SERVICE INFORMATION If a Drive Shaft (Axle Shaft) Boot on an APPLIED VEHICLE is found to be leaking grease, AND There is no abnormal noise or obvious CV Joint risk due to water intrusion and/or complete grease loss, check for REPAIR KIT-DUST BOOT (cv Joint Boot Kit) availability. • If there is a REPAIR KIT-DUST BOOT (CV Joint Boot Kit) available for the vehicle being repaired, do NOT replace the axle. Install a new boot kit following the procedure in the ESM. o Refer to the ESM: TRANSMISSION & DRIVELINE > FRONT AXLE > REMOVAL AND INSTALLATION > FRONT DRIVE SHAFT BOOT o If the complete axle (drive shaft) is replaced when only a new boot is required, the over-repair may be charged back to the retailer. • If there is NOT a REPAIR KIT-DUST BOOT (CV Joint Boot Kit) available for the vehicle being repaired, refer to the ESM for further diagnostic information. IMPORTANT: When servicing vehicles with staked axle nuts, refer to ITB21-002 to prevent Drive Shaft thread damage.
ITB13-008C	2022-10-07. Service bulletin. CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-008B	2021-07-10. Service bulletin. CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
P9331 2019 Q50_Q	2019-12-07. Service bulletin. 7-Speed Automatic Transmission (AT) Lock Up Retailer Inventory *** Retailer Announcement * INFINITI is conducting a retailer inventory quality action on to inspect 6 specific 2019 INFINITI Q50 and 43 specific INFINITI QX80 vehicles identified in Service Comm, to inspect the transmission torque converter. Affected vehicles are subject to a stop sale and are either currently in retailer inventory or assigned and in transit to the retailer. * What Retailers Should Do *** PLEASE FOLLOW THE ATTACHED INSPECTION INSTRUCTIONS 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History – Open Campaign I.D. P9331. • - New vehicles in retailer inventory can also be identified using DBS (Sales-> Vehicle Inventory, and filter by Open Campaign). o Refer to IPSB 15-286 for additional information • - Please continue to check newly arriving inventory for campaign applicability. 2. Please do not drive, sell, loan or trade the specific vehicles in Retailer Inventory subject to this Quality Action. 3. Use the attached procedure to inspect the vehicle: • - If the data shows the Torque Converter Clutch Solenoid Monitor (TCC SOL MON) increases to 0.4A during steady cruise at or above 25MPH, no further action is necessary • - File a claim for the inspection, and release the vehicle for sale
ITB18-034	2018-12-03. Service bulletin. TRANSMISSION & ENGINE AUTOMATED DATA COLLECTION AND DIAGNOSTIC REPORTING SERVICE INFORMATION To support proper diagnosis and to promote Fixed-Right-First-Time ? Infiniti may review CONSULT-III plus (CIII plus) data relating to vehicle operation and function to help with vehicle diagnosis and diagnostic validation. IMPORTANT: For transmission/engine repair or replacement, retailers are required to connect C-III plus and perform ?Diagnosis (All Systems)?. Performing C-III plus ?Diagnosis (All Systems)? is also required prior to contacting any Infiniti call center (i.e. TECH-LINE, PCC, or WCC) for diagnostic support or claim preauthorization. NOTE: For additional information regarding Automated Vehicle Data Collection, refer to IWBI/18-019. To support Automated Vehicle Data Collection, your C-III plus must have the Diagnosis result reporting function-Setting turned ON. If Diagnosis result reporting function-Setting is OFF: - It may cause dealer consideration for Audit or the Anomalous Repair Control (ARC) program, where applicable. - It may result in a repair being non-warrantable. Refer to the Service Procedure on the next page to confirm your C-III plus ?Diagnosis result reporting function-Setting? is turned ON.
REVISION 1 - P83	2018-02-21. Service bulletin. Electronic Power Steering (EPS) Voluntary Service Campaign This bulletin applies to vehicles equipped with RWD (Rear Wheel Drive) and EPS (Electronic Power Steering). UPDATE January 26, 2018 Please discard earlier versions of this bulletin The announcement from January 20, 2018 has been revised to include: - 205 retailed vehicles are being added to the previously announced quality action
PC609 2018 Q60 E	2018-02-21. Service bulletin. Electronic Power Steering (EPS) Quality Assurance Hold This bulletin applies to vehicles equipped with RWD (Rear Wheel Drive) and EPS (Electronic Power Steering). *** Retailer Announcement * Effective immediately, INFINITI is placing a temporary retailer inventory quality hold on 504 specific 2018 Q60 RWD Sport and RWD Red Sport vehicles equipped with EPS and identified in Service Comm. INFINITI has learned the software for the electronic power steering system may not be at the current production level. INFINITI is investigating this and anticipates having revised software available by the week of January 15, 2018. Further instructions will be sent when the software is available. * What Retailers Should Do * 1. Verify if vehicles are affected by this quality hold using Service Comm I.D. PC609 - New vehicles in retailer inventory can also be identified using DCS (Sales-> Vehicle Inventory, and filter by Open Campaign). - Refer to IPSB 15-286 for additional information - Please continue to check newly arriving inventory for quality hold applicability. 2. Please do not drive, sell, or trade the specific 2018 Q60 vehicles in retailer inventory subject to this quality hold. * Retailer Responsibility *** It is the retailer?s responsibility to check Service Comm or DBS National Service History - Open Campaigns using the appropriate campaign I.D for the hold status on each affected vehicle currently in new vehicle inventory.
P8301 2018 Q60	2018-02-21. Service bulletin. Electronic Power Steering (EPS) Retailer Inventor This bulletin applies to vehicles equipped with RWD (Rear Wheel Drive) and EPS (Electronic Power Steering). *** Retailer Announcement *INFINITI is updating the previously announced quality hold (PC609) from January 11, 2018 and is now instructing retailers to reprogram Electronic Power Steering (EPS) software to the most current production level on 514 specific 2018 Q60 RWD Sport and RWD Red Sport vehicles equipped with EPS. A new campaign ID (P8301) has been assigned to differentiate which vehicles have received updated software. This campaign ID will replace PC609 in Service Comm and DBS National Service History on January 20, 2018.* What Retailers Should Do * PLEASE FOLLOW THE ATTACHED REPAIR INSTRUCTIONS: 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History ? Open Campaign I.D. P8301 - New vehicles in retailer inventory can also be identified using DCS (Sales-> Vehicle Inventory, and filter by Open Campaign). - Refer to IPSB 15-286 for additional information - Please continue to check newly arriving inventory for quality action applicability. 2. Please do not drive, sell, or trade the specific 2018 Q60 vehicles in retailer inventory subject to this quality action until the updated software has been installed. 3. Use the attached procedure to install the updated software. 4. The service department should submit the applicable warranty claim for the action performed so it can be closed on Service Comm and release the vehicle. * Retailer Responsibility *** It is the retailer?s responsibility to check Service Comm or DBS National Service History ? Open Campaigns using the appropriate campaign I.D for the quality action status on each affected vehicle currently in new vehicle inventory. INFINITI requires retailers to perform this repair on applicable new vehicles in inventory prior to being retailed to ensure client satisfaction.
ITB18-004	2018-02-21. Service bulletin. VOLUNTARY SERVICE CAMPAIGN 2018 Q60 SPORT; POWER STEERING CONTROL MODULE REPROGRAMMING This bulletin applies to vehicles equipped with RWD (Rear Wheel Drive). INTRODUCTION Infiniti is conducting this voluntary service campaign on certain specific model year 2018 Q60 Sport and 2018 Q60 Red Sport vehicles equipped with Rear Wheel Drive (RWD) to reprogram the power steering control module. This service will be performed at no charge to the customer for parts or labor. IDENTIFICATION NUMBER Infiniti has assigned identification number P8301 to this campaign. This number must appear on all communication and documentation of any nature dealing with this campaign. DEALER RESPONSIBILITY Retailers are to repair vehicles falling within range of this campaign that enter the service department. This includes vehicles purchased from private parties, vehicles presented by transient (tourists) owners, and vehicles in a Retailer?s inventory.