NHTSA ID Number: 10196765
Manufacturer Communication Number: A21-046
Summary
Service Bulletin – An incorrect value in the PCM may cause a pressure problem in the CVT under certain driving conditions, causing increased surface pressure on the belt leading to a partial or complete breakage as well as possible ring breakage. New PCM software will increase the overall durability of the CVT primary belt within the transmission. This is accomplished by revising operational loads placed on the belt under certain driving conditions. DTC P271E is added so at the early stages of a CVT primary belt failure, the D light will flash, the MIL will come on, and engine power output will be reduced. This will lessen the chances of an unexpected, sudden loss of acceleration and allow the customer an opportunity to get the vehicle to a Honda
dealer
A21-046
June 1, 2021
Version 2
Product Update: 2016-20 HR-V Software Update and CVT Inspection
Supersedes 21-046, Dated April 27, 2021, to revise the information highlighted in yellow.
AFFECTED VEHICLES
| Year | Model | Trim Level | VIN Range |
| 2016-20 | HR-V 2WD and AWD (CVT models only) | ALL | Check the iN VIN status for eligibility. |
REVISION SUMMARY
Under CVT INSPECTION, Information was added.
BACKGROUND
An incorrect value in the PCM may cause a pressure problem in the CVT under certain driving conditions, causing increased surface pressure on the belt leading to a partial or complete breakage as well as possible ring breakage. New PCM software will increase the overall durability of the CVT primary belt within the transmission. This is accomplished by revising operational loads placed on the belt under certain driving conditions. DTC P271E is added so at the early stages of a CVT primary belt failure, the D light will flash, the MIL will come on, and engine power output will be reduced. This will lessen the chances of an unexpected, sudden loss of acceleration and allow the customer an opportunity to get the vehicle to a Honda dealer
CUSTOMER NOTIFICATION
Owners of affected vehicles will be sent a notification of this campaign.
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
Some vehicles affected by this campaign may be in your new or used vehicle inventory. Repair these vehicles before they are sold.
CORRECTIVE ACTION
Update the PCM software and inspect the transmission to verify if the internal components are prematurely deteriorating within the transmission.
NOTE:
- Failure to follow the inspection procedure correctly may result in the customer’s vehicle experiencing a transmission failure after the repair. Improper repairs could be subject to debit.
- Failure to perform the software update will result in the vehicle not having the ability to detect CVT belt slippage, trigger the MIL, and set a DTC which could cause the CVT belt to break and the vehicle not move when accelerating.
REQUIRED MATERIALS
| Part Name | Quantity | Part Number |
| Disposable Paint Strainer (pack of 250) or Commercially equivalent (fixes 250 vehicles) | 1 | PMICSM6 |
| Fine Point Permanent Marker (Black or Red) or Equivalent | 1 | Commercially Available |
TOOL INFORMATION
| Part Name | Quantity | Part Number |
| Belt Fragment Detection Kit (includes belt fragment detection template and a magnet, 5 kits were shipped to each dealership) | 1 | 07AAJ-52NA100 |
SOFTWARE INFORMATION
This new software will increase the overall durability of the CVT belt within the transmission. This is accomplished by revising operational loads placed on the belt under certain driving conditions. DTC P271E was added so at the early stages of a CVT belt failure, the D light will flash, the MIL will come on, and engine power output will be reduced. This will lessen the chances of an unexpected, sudden loss of acceleration and allow the customer an opportunity to get the vehicle to a Honda dealer.
NOTE: Unnecessary or incorrect repairs resulting from a failure to update the diagnostic and reprogramming software are not covered under warranty.
Before beginning the repair, make sure all diagnostic and reprogramming software are updated as listed.
| i-HDS Software Version | 1.006.026 or later |
| HDS Software Version | 3.104.014 or later |
| J2534 Rewrite Software Information | |
| PC Application Version | 1.2.1.1 |
| Database Update | 05-APR-2021 or later |
| NoticeDB Version | 05-APR-2021 or later |
Update only the systems and software listed in this service bulletin.
American Honda has validated and approved the Denso DST-I as the vehicle communication interface (VCI) to support this service bulletin.
For more information about updating vehicle systems, refer to service bulletin 01-023, Updating Control Units/Modules.
| Year/Model | Drivetrain | Trim Level | Vehicle System | Program ID (or later) |
| 2016 HR-V | 2WD | LX | PCM | 37805-51M-A54 |
| 2016 HR-V | 2WD | EX, EXL | PCM | 37805-51M-A64 |
| 2016 HR-V | AWD | LX | PCM | 37805-51M-A74 |
| 2016 HR-V | AWD | EX, EXL | PCM | 37805-51M-A84 |
| 2017 HR-V | 2WD | LX | PCM | 37805-51M-C53 |
| 2017 HR-V | 2WD | EX, EXL | PCM | 37805-51M-C63 |
| 2017 HR-V | AWD | LX | PCM | 37805-51M-C73 |
| 2017 HR-V | AWD | EX, EXL | PCM | 37805-51M-C83 |
| 2018 HR-V | 2WD | LX | PCM | 37805-51M-C22 |
| 2018 HR-V | 2WD | EX, EXL | PCM | 37805-51M-C32 |
| 2018 HR-V | AWD | LX | PCM | 37805-51M-C42 |
| 2018 HR-V | AWD | EX, EXL | PCM | 37805-51M-C92 |
| 2019 HR-V | 2WD | LX | PCM | 37805-51M-L52 |
| 2019 HR-V | 2WD | EX, EXL | PCM | 37805-51M-L72 |
| 2019 HR-V | 2WD | Sport | PCM | 37820-51M-L62 |
| 2019 HR-V | AWD | LX | PCM | 37805-51M-L82 |
| 2019 HR-V | AWD | EX, EXL | PCM | 37805-51M-L42 |
| 2019 HR-V | AWD | Sport | PCM | 37820-51M-L92 |
| 2020 HR-V | 2WD | LX | PCM | 37805-6N8-A52 |
| 2020 HR-V | 2WD | EX, EXL | PCM | 37805-6N8-A72 |
| 2020 HR-V | 2WD | Sport | PCM | 37820-6N8-A62 |
| 2020 HR-V | AWD | LX | PCM | 37805-6N8-A12 |
| 2020 HR-V | AWD | EX, EXL | PCM | 37805-6N8-A32 |
| 2020 HR-V | AWD | Sport | PCM | 37805-6N8-A22 |
REPAIR PROCEDURE
NOTE:
- Make sure the 12-volt battery is fully charged before starting an update.
- Connect a fully charged jumper battery to the vehicle, and leave it connected during the entire procedure to maintain steady voltage.
- Do not use the GR8 because the vehicle requires a steady electrical current.
- Control module failure caused by the improper completion of a software update (early key cycle, low battery voltage, disconnected DLC cable, etc.) is not covered by warranty.
- If an error occurs during the update or the i-HDS freezes, do not disconnect the battery or turn the ignition to OFF. Reboot the i-HDS, and start over.
- To prevent control unit damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, door locks, etc.) during the update.
- Warranty reimbursement for technician labor is not allowed for routine checking/installation of any available software update.
- Update the PGM-FI software using the J2534 Rewrite software with the DST-i. Refer to service bulletin 01-023, Updating Control Units/Modules.
- ECM/PCM Idle Learn.
NOTE: Make sure all electrical items (the A/C, the audio, the lights, etc.) are off.
- Turn the vehicle to the ON mode, and wait 2 seconds.
- Start the engine. Hold the engine speed at 3,000 rpm without load (CVT in P or N) until the radiator fan comes on, or until the engine coolant temperature reaches 194 °F (90 °C).
- Let the engine idle for about 5 minutes with the throttle fully closed.
NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.
- Turn the vehicle to the OFF (LOCK) mode.
- Jump the SCS line with the HDS.
- Wait 60 seconds, and exit the SCS mode with the HDS.
CVT INSPECTION
The CVT inspection uses a special magnet to detect any metal fragments that may have been shed from the CVT belt. These fragments will collect in the oil pan. The inspection will be performed by placing a clear template on the CVT oil pan; tracing the slots on the template onto the pan with a marker, removing the template and then slowly sliding the magnet over lines 1 through 7 on the pan to the inspection area. If the magnet sticks to the inspection area, then the transmission will need to be replaced.
NOTE: Click HERE to see video of the transmission inspection.
- Remove the engine undercover (2WD models).
- Remove the front splash shield.
- Wipe the oil pan with a shop towel, removing any dirt or contamination.
- Remove the clear protective wrapper from the template.
- Place the clear template (07AAJ-52NA100) on the oil pan as shown below. Line up the template with the oil pan bolts and the center of the transmission oil pan with the dashed lines.
- While holding the template with one hand, apply pressure to keep the left side of the template flat against the pan, and trace the grooves on that side with a permanent marker as shown above. Keeping it in position, press against the right side of the template so the right-side grooves are now flush against the oil pan and trace the remaining lines including the inspection area circle on that side. Next, trace grooves on Letter “A” with a permanent marker.
- Remove the template from the oil pan.
- Starting on line #1, place a magnet on each of the lines starting from the outside, slowly trace each line to the center inspection circle on the template, then lift the magnet off the inspection area (shown in black below).
- Repeat until you have traced all 7 lines with the magnet.
NOTE: It is important to slide the magnet smoothly from outside (bolt side) of the oil pan slowly, following the 7 lines you traced to the inspection area circle. While sliding the magnet on the oil pan, you may feel the magnet sticking in some areas shown on illustration above. This is normal as there are some bolts under the oil pan that attach the valve body to the transmission.
- After tracing all 7 lines from the outside to the inspection area, let go of the magnet to see if it sticks in place. If the magnet sticks to the oil pan in the inspection area there is a problem with the transmission, go to service bulletin 21047, Warranty Extension 2016 – 20 HR-V CVT Premature Belt Deterioration. If the magnet does not stick to the oil pan, go to the next step.
- Place the magnet in the inspection area and slowly trace the “A” lines with the magnet to the lower right-side magnet shown on the oil pan (see image below). This is done to move any metal contaminates too small to hold the test magnet to the internal transmission magnet. Inspection is complete.
- Install the engine undercover (2WD models) and front lower splash shield.
- California residents only: Fill out a Vehicle Emissions Recall – Proof of Correction certificate, and use EAU as the recall number. Have the service advisor give the certificate to your customer, and advise him or her to keep it as proof that the recall was completed. Your customer will need to submit this certificate to the DMV only if the DMV requests it. If you need more certificates, use reorder number Y0657.
5 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| HONDA | HR-V | 2016-2020 |
1 Associated Document
Manufacturer Communications
A21-046
June 1, 2021
Version 2
MC-10196765-0001.pdf 578.181KB
NHTSA ID Number: 10191760
Manufacturer Communication Number: A21-046
Summary
Service Bulletin – An incorrect value in the PCM may cause a pressure problem in the CVT under certain driving conditions, causing increased surface pressure on the belt leading to a partial or complete breakage as well as possible ring breakage. New PCM software will increase the overall durability of the CVT primary belt within the transmission. This is accomplished by revising operational loads placed on the belt under certain driving conditions. DTC P271E is added so at the early stages of a CVT primary belt failure, the D light will flash, the MIL will come on, and engine power output will be reduced. This will lessen the chances of an unexpected, sudden loss of acceleration and allow the customer an opportunity to get the vehicle to a Honda dealer.
1 Associated Document
Manufacturer Communications
A21-046
April 27, 2021
Version 1
MC-10191760-0001.pdf 644.706KB
NHTSA ID Number: 10198210
Manufacturer Communication Number: ONL6MT6M9061721
Summary
Owner Notification Letter – Honda is conducting a product update to your 2016-20 HR-V. The current continuously variable transmission (CVT) software does not properly monitor internal fluid pressure and detect early CVT belt failure. This can possibly cause the vehicle not to move when accelerating. Honda is providing a product update with new CVT software to fix this issue.
1 Associated Document
Manufacturer Communications
Product Update – Service Bulletin #21-046 / Defect #6MT
Warranty Extension – Service Bulletin #21-047 / Defect #6M9
MC-10198210-0001.pdf 323.031KB
Reprogramming
i-HDS Diagnostic Software and J2534 Reprogramming Software
Honda J2534 Pass-Thru User Guide
Honda J2534 Pass-Thru Software Download
i-HDS Diagnostic Software and J2534 Reprogramming Software
American Honda Motor Co., Inc. ("Honda") offers the i-HDS (Honda Diagnostic System) software suite for the diagnosis and repair of electronic systems on Honda and Acura automobiles, and for the reprogramming of electronic control units (including, but not limited to, ECMs and PCMs). This software provides access to all Honda and Acura vehicle systems (access to the immobilizer security system requires a Security Professional level software subscription and Vehicle Security Professional [VSP] registration with NASTF). To use the i-HDS software, you need to purchase one of our convenient subscription options. In addition, you will need a pass-thru Vehicle Communication Device (VCI) that is compliant with SAE J2534-1 and J2534-2 in order to communicate with the vehicle
Vehicle Communication Interfaces (VCI)
The i-HDS software supports the use of a generic pass-thru VCI that is compliant with SAE J2534-1 and J2534-2. However, Honda recommends the Denso DST-i or the Bosch MVCI for use on Honda and Acura vehicles, as Honda has worked closely with these manufacturers to ensure their hardware and our software interact safely and within the J2534-1 and -2 specifications, for both diagnostics and reprogramming. If you choose to use a generic VCI, please carefully consider the customer and technical support options you will receive from your chosen device supplier. Honda does not provide technical or customer support for generic VCI devices.
The VCI Application Table below lists devices that either are approved and supported by Honda or are known to have completed and passed an independent, exhaustive validation program with our i-HDS software suite.
| VCI Name | Manufacturer | Version Information | Notes | |
|---|---|---|---|---|
| Firmware | J2534 API | |||
| DST-i | DENSO | 2.02.0002* | 04.04 | This is the current generation VCI used by Honda and Acura dealers. Honda routinely validates the functionality and provides customer support for this device. |
| DST-nano | DENSO | 2.02.0002* | 04.04 | This is the current generation VCI used by Honda Canada Inc. Honda and Acura dealers. Honda routinely validates the functionality and provides customer support for this device. |
| MVCI | Bosch | 3.01.60* | 04.04 | This is the previous generation VCI used by Honda and Acura dealers. Honda routinely validates the functionality and provides customer support for this device. |
| MongoosePro Honda | Drew Technologies | 1.9.5** | 04.04 | This company has completed an independent i-HDS validation and claims it to function with the i-HDS software. Honda does not provide ongoing validation, nor customer support for this device. |
| d-briDGe Pro | Dearborn Group | 3.303** | 04.04 | This company has completed an independent i-HDS validation and claims it to function with the i-HDS software. Honda does not provide ongoing validation, nor customer support for this device. |
* These versions may have been superseded. Honda provides the latest supported versions to current i-HDS subscribers.
** Version used in validation program. See Terms and Conditions and Important Notice Regarding Reprogramming below for more details.
Reprogramming with the J2534 Rewrite Application in i-HDS
Included in the i-HDS software suite is a new reprogramming application called J2534 Rewrite. This application is made available to all subscribers of the i-HDS software suite and replaces the previous generation software, J2534 Honda Pass-thru Reprogramming Software.
This new application is compatible with generic VCIs that comply with SAE J2534. It must be used to reprogram any Honda/Acura vehicle equipped with ECUs that support reprogramming. Refer to the table below for legacy applicability for the programming of ECMs and PCMs. Though system dependent, late-model vehicles may be equipped with other ECUs that support reprogramming as well, e.g. ABS or VSA. J2534 Rewrite must be used to reprogram these control modules, as instructed in an applicable service bulletin.
As shown in this table, not all legacy Honda/Acura models are equipped with a reprogrammable ECM/PCM. Furthermore, all 2007 and later models not listed in the table are fully supported with this application.
DST-i Information:
MVCI Information:
- Advanced VCI Box, Industry-leading J2534 Pass-Thru Technology: This J2534 Pass-Thru Programmer is designed espically for technicians, independent shop owners, and DIY enthusiasts, enables fast, reliable computer-based programming. It supports all J2534 protocols—including the latest DoIP and CAN FD—ensuring full compatibility with both legacy and next-generation vehicles.
- High-Speed OEM-Level Diagnostics & Programming: Unlock true OEM functionality with comprehensive system diagnostics, guided troubleshooting, coding, adaptations, resets, and programming—all designed to slash repair time. This all-in-one tool eliminates the need for multiple OEM devices, boosting efficiency and cutting costs. Equipped with High-Speed USB, it delivers 10x more data per second than competing solutions
- Coverage for 17 Car Brands & Ultra Reliability: Works seamlessly for Chrysler, for Ford(Forscan), for GM, for Nissan, for Toyota, for Honda, for Subaru(SSM4), for Land Rover/Jaguar, for Volvo, for Wuling, for Volkswagen, for Mercedes-Benz, and for BMW. Backed by over 10000 real vehicle tests and benefit from a wealth of practical experience, this OEM reprogramming tool guarantees stable and exceptional performance
- User-Friendly RLink Platform & Expert Support: TOPDON’s proprietary driver management platform offers a clean interface and lifetime free updates. Access a rich library of real-world case studies to stay ahead of the curve. Backed by a support team with 10+ years of J2534 and automotive repair experience, we provide one-on-one assistance to resolve any technical issue.
- 6.6 ft USB-C Cable & Portable Storage Case: The RLink J2534 diagnostic tool features a 6.6ft USB 2.0 Cable and a 1.2 ft OBDII Extension Cable, allows to connection your computer easily outside the vehicle. The included handled carry case offers easy portability, storage, and hanging options—keeping your gear clean and ready to go, anywhere.
- Dual WiFi & 10.1" Touchscreen: Provides a stable, high-speed wireless link 3x faster than bluetooth, and a responsive, professional interface. Topdon ONE obd2 scanner diagnostic tool ensures smooth, non-lagging diagnostic scan, boosting mechanic efficiency
- J2534 Pass-Thru Support: The included ONE VCI supports the J2534 standard, allowing it to function as a pass-thru device when paired with OEM diagnostic software.Through TOPDON’s RLink platform, technicians can perform dealer-level coding, expanding in-house capabilities without investing in multiple factory automotive scan tools
- OE Topology Mapping: Visualize the vehicle’s ECU network exactly as it’s built.Zoom, pan, and highlight specific modules to pinpoint component issues with precision.Topology mapping displays real-time communication between modules
- 50 Plus Service Functions: Covers high-demand services like ADAS calibration, DPF regen, TPMS reset, ABS bleed, and throttle adaptation.Expands your service menu, allows you to charge premium rates, and turns away zero jobs due to lack of tooling. Vehicle-specific functionality may vary
- Advaned ECU Coding: 10 of the most serviced brands in North America, including full ECU coding and flash hidden support for BMW, VW, Au-di, Benz, Porsche, Toyota, Ni ssan and more. Enables module replacement, feature customization, and personal settings with automatic backup or restore.Lets your shop safely offer high-margin customization services, attracting more customers and boosting profit
- ALL OF THE J2534 PROTOCOLS - This single unit has all of the protocols you need for your OEM J2534 reprogramming and diagnostics including the latest in DoIP and CanFD
- J2534 TECHNICAL SUPPORT - FREE for the life of the tool. Staffed by technicians who understand vehicle repair and J2534 Pass‑thru
- TOOLBOX WITH OEM APPLICATION DESCRIPTIONS - educational video tutorials and real-time news – Giving you the confidence and up-to-date knowledge to get the job done
- J2534 v05.00 API - The newest version of J2534 to give you the latest in pass-thru technology
- FUTURE PROOF WITH 4 CAN CHANNELS - Going beyond the 3 required by select Chrysler/FCA models, CarDAQ-Plus 3 also provides a 4th to meet the needs of future OEM applications
- 💯【Conta.ct us for Support Directly】For any issues experienced after purchase, please reach out to: 📞autelsupply@ outlook. com🛣️. Our team will provide perfect solution for you. For tech support or [explore additional accessory], please cont.act our team: 📞autelsupply@ outlook. com🛣️.
- 🌎【Autel J2534 Pass-Thru Progra.mmer】As an OEM Pass-Thru Progra.mmer Vehicle interface for multiple makes, Autel MaxiFlash J2534 support all J2534 protocols, D-PDU, CAN-FD and DoIP protocols. 2026 newer Autel MaxiFlash J2534 VCI can works with P-C and download OEM vehicle software, seamlessly conduct OE-level diagnostic-progra.mming-c0ding. Also, Work with Elite II Pro/ Ultra Lite/ MS909/ MS909CV/ MS909EV to directly pro.gram on Merce.des-Be.nz & BM.W. Autel J2534 Progr.ammer is a multi-functional device and supports 10+ major brands, including for Hond.a, G.M, LandRo.ver, BM.W, Chrysl.er, For.d, Hyun.dai, Ki.a, Merc.edes B.enz, Toyot.a, Volksw.agen etc.
- 🌎【Enhanced Protocol: J2534/D-PDU/RP1210/CAN FD/DoIP】Autel MaxiFlash JVCI is a blueto.oth communicate device, it supports latest CAN FD DoIP CAN protocols, compliant with automotive D-PDU/ J2534/ RP1210 standards. It can perform standard PassThru J2534 functions: compatible with Toyota Techstream, Volvo VIDA, Honda HDS, Jaguar Land Rover IDS and BM.W 3G for OEM diagnostics. CAN FD protocol is mainly for GM 2019+, DoIP protocol is mainly for Volvo 2018+, for L-and Rover/for Jaguar 2017+, for BM.W F chassis and G chassis.
- 🌎【Compatible with P-C/ WIND.OWS 】The Autel J2534 VCI can be connected to a compu.ter via a data cable; once the corresponding OEM software is installed, it enables do advanced progr.amming and c0ding on your vehicles. Easy Steps: 1) Connect to P-C via a USB cable 2) download OEM vehicle software 3) Start Diagnose. Take For.d for example, you can download OEM software on mot.orcraft.erservi.ce website, such as: For.d Diagnostic Software downloads, As B.uilt Data, Updated Cali.bration information, then use different software do relevant features.
- 🌎【Work with Autel Elite II Pro/ Ultra Lite/ MS909/ MS909CV/ MS909EV】This 2026 latest Autel J2534 Pass-Thru VCI is 100% compatible with Autel Elite II Pro Ultra Lite MS909 MS909CV MS909EV to perform advanced functions from diagnose to progra.mming.
- [2026 X431 PRO3 V+ Elite] A great value for the X431 series that differs from similar diagnostic tools by adding: 1) J2534 protocol for over $800 in savings; 2) CANFD/DOIP support for enhanced communications; 3) Configuration of over $900 worth of HD(heavy truck) modules, needed purchase HD diagnostic software by HD vehicle model for use.; 4) A 10.1 inch Gorilla screen with 1280*800 resolution and 80% more touch screen sensitivity
- [J2534 Protocol Scan Tool] The J2534 Direct Access Device can be used as a factory scanning tool at no cost to you, saving you over $2,000. You can easily expand your ECU protocol capabilities for Toyota, Honda, VW, BMW, Ford, GM, Chrysler, Mercedes-Benz and more. The LAUNCH X431 PRO3 V+ ELITE Scan Tool is equipped with the newly upgraded smartlinkC V2.0. smartLinkC is a communication interface that supports the J2534 specification. It can also be used as a J2534 PassThru device to implement the J2534 protocol with a PC that has OEM diagnostic software installed.The J2534 protocol is the only way to solve problems ranging from drivability and power loss to poor fuel economy
- [Top Hardware Configuration, Upgraded Version of V+] LAUNCH Diagnostic Scanner adopts Android 10.0 OS; CPU is 4-core processor with 2.0 GHz, which greatly improves the speed of running multi-tasks. 2.4GHz/5GHz; 6300mAh/7.6V ultra-large capacity battery; 10.1 inch Gorilla screen, sunlight readable, 8MP camera; Auto VIN; 4GB+64GB storage; 20x transfer rate to save more vehicle files and customer data; New TYPE A interface to connect expansion tools such as oscilloscopes, sensors, etc.; Supports more than 25 software languages such as EN, DE, FR, SP and JP
- [60+ Reset 3000+ Active Test] Full Bi-Directional Scan Tool quickly detects problems and guides repairs based on the response of actuators such as air conditioning clutches, windows, doors, mirrors and more. With the touch of a finger, you can easily send command signals from the scanner to a variety of modular actuators, testing component integrity and functionality in minutes or even seconds to determine if a replacement or repair is needed. In addition, the machine enjoys 60+ special services such as oil reset, ABS brake bleed, EPB, SAS, BMS, suspension, injector reset and more, and undergoes rigorous field testing to ensure availability
- [Unrivaled Coverage, Over 200 Vehicle Brands] LAUNCH X431 PRO3 V+ Elite Automotive Scanner is suitable for over 200 vehicle brands, including commercial vehicles and new energy vehicles. This professional car scanner supports: 1) J2534/D-PDU protocol for HD trucks; DoIP/CANFD for Land Rover/Jaguar, BMW F/G chassis, GM, etc.; 2) FCA Autoauth, covering 2018+ Chrysler/Dodge/Fiat, etc. New/old models, all covered. Includes frequently updated vehicle software and car coverage for faster support of other new models
- Industry-leading J2534 Pass-Thru Technology: Enabling diagnostics, reprogramming and security functions for dealerships and the independent repair facility. Economical and compact pass-thru devices provides an easy-to-use interface that allows you to repair complex vehicles with OE applications in your shop. Each type (see single branded types above) Mongoose-Plus is engineered to work with one of the following OEM's J2534 applications for Chrysler, Ford, GM, Nissan, Toyota, Subaru, & VW/Audi.
- Supports Current GM Vehicles: Now includes CAN-FD, DoIP (Diagnostics over Internet Protocol - as defined in J2534-2) and support for J2534 version 5.0. This is the tool that GM dealerships use for diagnostics and reprogramming.
- NEW Bluetooth Wireless Options Available: Providing wireless connectivity between your laptop and the Mongoose-Plus
- Expert Product Support: Staffed by technicians who understand vehicle repair and J2534 Pass‑Thru applications to help you with any technical setup questions
- Key Registration and Immobilizer Support: Using NASTF Vehicle Security Professional credentials
Last update on 2026-06-11 / Affiliate links / Images from Amazon Product Advertising API
SEOCONTENT-START
CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment,
and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not
assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact
an authorized Honda automobile dealer.
© 2021 American Honda Motor Co., Inc. – All Rights Reserved Page 1 of 7
Service Bulletin
21-046
June 1, 2021 Version 2
Product Update: 2016-20 HR-V Software Update and CVT Inspection Supersedes 21-046, Dated April 27, 2021, to revise the information highlighted in yellow.
AFFECTED VEHICLES
Year
Model
Trim Level
VIN Range
2016-20
HR-V 2WD and AWD (CVT models only)
ALL
Check the iN VIN status for eligibility.
REVISION SUMMARY Under CVT INSPECTION, Information was added.
BACKGROUND
An incorrect value in the PCM may cause a pressure problem in the CVT under certain driving conditions, causing increased surface pressure on the belt leading to a partial or complete breakage as well as possible ring breakage. New PCM software will increase the overall durability of the CVT primary belt within the transmission. This is accomplished by revising operational loads placed on the belt under certain driving conditions. DTC P271E is added so at the early stages of a CVT primary belt failure, the D light will flash, the MIL will come on, and engine power output will be reduced. This will lessen the chances of an unexpected, sudden loss of acceleration and allow the customer an opportunity to get the vehicle to a Honda dealer
CUSTOMER NOTIFICATION
Owners of affected vehicles will be sent a notification of this campaign.
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
Some vehicles affected by this campaign may be in your new or used vehicle inventory. Repair these vehicles before they are sold.
CORRECTIVE ACTION
Update the PCM software and inspect the transmission to verify if the internal components are prematurely deteriorating within the transmission.
NOTE:
• Failure to follow the inspection procedure correctly may result in the customer’s vehicle experiencing a transmission failure after the repair. Improper repairs could be subject to debit.
• Failure to perform the software update will result in the vehicle not having the ability to detect CVT belt slippage, trigger the MIL, and set a DTC which could cause the CVT belt to break and the vehicle not move when accelerating.
Page 2 of 7
REQUIRED MATERIALS
Part Name
Part Number
Quantity
Fine Point Permanent Marker (Black or Red) or Equivalent
Commercially Available
1
TOOL INFORMATION
Tool Name
Part Number
Quantity
Belt Fragment Detection Kit (includes belt fragment detection template and a magnet, 5 kits were shipped to each dealership)
07AAJ-52NA100
1
NOTE: Available through the Honda Tool and Equipment Program. Call (888) 424-6857 or use the fax order form provided in the Honda Tool and Equipment Program Catalog. Phone lines are open Monday through Friday from 7:30 AM to 7:00 PM Central Time.
WARRANTY CLAIM INFORMATION
Operation Number
Description
Flat Rate Time
Defect Code
Symptom Code
Template ID
Failed Part Number
1255G3
Update the PCM Software.
0.2 hr.
6MT00
EAU00
A21046A
37820-51M-A63
A
Do the PCM idle learn procedure.
0.1 hr.
B
Inspection. (Includes time to remove and install lower engine cover on 2WD).
0.3 hr.
Skill Level: Repair Technician
SOFTWARE INFORMATION
This new software will increase the overall durability of the CVT belt within the transmission. This is accomplished by revising operational loads placed on the belt under certain driving conditions. DTC P271E was added so at the early stages of a CVT belt failure, the D light will flash, the MIL will come on, and engine power output will be reduced. This will lessen the chances of an unexpected, sudden loss of acceleration and allow the customer an opportunity to get the vehicle to a Honda dealer.
NOTE: Unnecessary or incorrect repairs resulting from a failure to update the diagnostic and reprogramming software are not covered under warranty.
Before beginning the repair, make sure all diagnostic and reprogramming software are updated as listed.
i-HDS Software Version
1.006.026 or later
HDS Software Version
3.104.014 or later
J2534 Rewrite Software Information
PC Application Version
1.2.1.1
Database Update
05-APR-2021 or later
NoticeDB Version
05-APR-2021 or later
Update only the systems and software listed in this service bulletin.
American Honda has validated and approved the Denso DST-I as the vehicle communication interface (VCI) to support this service bulletin.
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For more information about updating vehicle systems, refer to service bulletin 01-023, Updating Control Units/Modules.
Year/Model
Drivetrain
Trim Level
Vehicle System
Program ID (or later)
2016 HR-V
2WD
LX
PCM
37805-51M-A54
2016 HR-V
2WD
EX, EXL
PCM
37805-51M-A64
2016 HR-V
AWD
LX
PCM
37805-51M-A74
2016 HR-V
AWD
EX, EXL
PCM
37805-51M-A84
2017 HR-V
2WD
LX
PCM
37805-51M-C53
2017 HR-V
2WD
EX, EXL
PCM
37805-51M-C63
2017 HR-V
AWD
LX
PCM
37805-51M-C73
2017 HR-V
AWD
EX, EXL
PCM
37805-51M-C83
2018 HR-V
2WD
LX
PCM
37805-51M-C22
2018 HR-V
2WD
EX, EXL
PCM
37805-51M-C32
2018 HR-V
AWD
LX
PCM
37805-51M-C42
2018 HR-V
AWD
EX, EXL
PCM
37805-51M-C92
2019 HR-V
2WD
LX
PCM
37805-51M-L52
2019 HR-V
2WD
EX, EXL
PCM
37805-51M-L72
2019 HR-V
2WD
Sport
PCM
37820-51M-L62
2019 HR-V
AWD
LX
PCM
37805-51M-L82
2019 HR-V
AWD
EX, EXL
PCM
37805-51M-L42
2019 HR-V
AWD
Sport
PCM
37820-51M-L92
2020 HR-V
2WD
LX
PCM
37805-6N8-A52
2020 HR-V
2WD
EX, EXL
PCM
37805-6N8-A72
2020 HR-V
2WD
Sport
PCM
37820-6N8-A62
2020 HR-V
AWD
LX
PCM
37805-6N8-A12
2020 HR-V
AWD
EX, EXL
PCM
37805-6N8-A32
2020 HR-V
AWD
Sport
PCM
37805-6N8-A22
REPAIR PROCEDURE
NOTE:
• Make sure the 12-volt battery is fully charged before starting an update.
• Connect a fully charged jumper battery to the vehicle, and leave it connected during the entire procedure to maintain steady voltage.
• Do not use the GR8 because the vehicle requires a steady electrical current.
• Control module failure caused by the improper completion of a software update (early key cycle, low battery voltage, disconnected DLC cable, etc.) is not covered by warranty.
• If an error occurs during the update or the i-HDS freezes, do not disconnect the battery or turn the ignition to OFF. Reboot the i-HDS, and start over.
• To prevent control unit damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, door locks, etc.) during the update.
• Warranty reimbursement for technician labor is not allowed for routine checking/installation of any available software update.
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1. Update the PGM-FI software using the J2534 Rewrite software with the DST-i. Refer to service bulletin 01-023, Updating Control Units/Modules.
2. ECM/PCM Idle Learn.
NOTE: Make sure all electrical items (the A/C, the audio, the lights, etc.) are off.
3. Turn the vehicle to the ON mode, and wait 2 seconds.
4. Start the engine. Hold the engine speed at 3,000 rpm without load (CVT in P or N) until the radiator fan comes on, or until the engine coolant temperature reaches 194 °F (90 °C).
5. Let the engine idle for about 5 minutes with the throttle fully closed.
NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.
6. Turn the vehicle to the OFF (LOCK) mode.
7. Jump the SCS line with the HDS.
8. Wait 60 seconds, and exit the SCS mode with the HDS.
CVT INSPECTION
The CVT inspection uses a special magnet to detect any metal fragments that may have been shed from the CVT belt. These fragments will collect in the oil pan. The inspection will be performed by placing a clear template on the CVT oil pan; tracing the slots on the template onto the pan with a marker, removing the template and then slowly sliding the magnet over lines 1 through 7 on the pan to the inspection area. If the magnet sticks to the inspection area, then the transmission will need to be replaced. NOTE: While sliding the magnet on the oil pan, you may feel the magnet sticking in some areas shown on illustration below. This is normal as there are some bolts under the oil pan that attach the valve body to the transmission.
Click on HERE to see video of Transmission Inspection. 1. Remove the engine undercover on 2WD models only. AWD models do not have this cover.
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2. Remove the front splash shield.
3. Wipe the oil pan with a shop towel, removing any dirt or contamination.
4. Remove the clear protective wrapper from the template.
5. Place the clear template (07AAJ-52NA100) on the oil pan as shown below. Line up the template with the oil pan bolts and the center of the transmission oil pan with the dashed lines.
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6. While holding the template with one hand, apply pressure to keep the left side of the template flat against the pan, and trace the grooves on that side with a permanent marker as shown above. Keeping it in position, press against the right side of the template so the right-side grooves are now flush against the oil pan and trace the remaining lines including the inspection area circle on that side. Next, trace grooves on Letter “A” with a permanent marker.
7. Remove the template from the oil pan.
8. Starting on line #1, place a magnet on each of the lines starting from the outside, slowly trace each line to the center inspection circle on the template, then lift the magnet off the inspection area (shown in black below).
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9. Repeat until you have traced all 7 lines with the magnet.
NOTE: It is important to slide the magnet smoothly from outside (bolt side) of the oil pan slowly, following the 7 lines you traced to the inspection area circle. While sliding the magnet on the oil pan, you may feel the magnet sticking in some areas. This is normal as there are some bolts under the oil pan that attach the valve body to the transmission.
10. After tracing all 7 lines from the outside to the inspection area, let go of the magnet to see if it sticks in place. If the magnet sticks to the oil pan in the inspection area there is a problem with the transmission, take a clear picture of the magnet sticking to the oil pan in the inspection area, then go to service bulletin 21-047, Warranty Extension 2016 – 20 HR-V CVT Premature Belt Deterioration. If the magnet does not stick to the oil pan, go to the next step.
11. Place the magnet in the inspection area and slowly trace the “A” lines with the magnet to the lower right-side magnet shown on the oil pan (see image below). This is done to move any metal contaminates too small to hold the test magnet to the internal transmission magnet. Inspection is complete.
12. Install the engine undercover (2WD models) and front lower splash shield.
13. California residents only: Fill out a Vehicle Emissions Recall – Proof of Correction certificate, and use EAU as the recall number. Have the service advisor give the certificate to your customer, and advise him or her to keep it as proof that the recall was completed. Your customer will need to submit this certificate to the DMV only if the DMV requests it. If you need more certificates, use reorder number Y0657.
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