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Service bulletin A20-116

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)
TypeService bulletin
NHTSA id10184329
Published by NHTSA2020-12-19
Manufacturer's numberA20-116
Manufacturer's date2020-12-09
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM

NHTSA's summary

Service Bulletin - The vehicle may not start upon first press of the ENGINE START/STOP button. Also, MID displays the error message KEYLESS START SYSTEM ERROR, and DTC B12C5 (Engine Start/Stop Switch Failure) is stored. American Honda is extending the warranty for the keyless start system on these vehicles to 9 years from the original date of purchase or 125,000 miles, whichever comes first.

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

Electrical system, Engine, Equipment and accessories

Trouble codes named

B12C5

Vehicles listed
HONDA HR-V2016, 2017, 2018

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

Recalls for the same vehicles and component
15V4720002015-07-28. EQUIPMENT:OTHER:LABELS; TIRES

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
ATI&060320229012022-07-07. Service bulletin. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2021 HR-VS that exhibit a leak at the A/C Condenser. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
ATI&030120229012022-03-08. Service bulletin. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2021 HR-V AWDs with a customer complaint of inaccurate fuel gauge reading; less fuel remains in the fuel tank than indicated on the fuel gauge. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
A21-0472021-12-22. Service bulletin. Service Bulletin - Due to the possibility of early deterioration of the Continuous Variable Transmission (CVT) drive belt, American Honda is extending the warranty coverage on these CVT models to 7 years from the original date of purchase or 150,000 miles, whichever comes first. If the PCM software was previously updated in service bulletin 21-046, Product Update: 2016-20 HR-V Software Update and CVT Inspection, the warranty extension applies, since the CVT primary drive belt is now a OBD-monitored part due to the addition of DTC P271E.
NSS3002021-12-13. Service bulletin. Recall Information update: Service Bulletin NSS300 #2
0328712021-12-13. Service bulletin. Honda Job Aid - Tech Line Calling Guidelines Affected vehicles General Info.
032862021-12-13. Service bulletin. Honda Job Aid - Tech Line Calling Guidelines Affected vehicles General Info.
ATI&112920219082021-12-03. Service bulletin. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2021 HR-V AWDs with a customer complaint of inaccurate fuel gauge reading; less fuel remains in the fuel tank than indicated on the fuel gauge. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
ATI&080920219062021-08-17. Service bulletin. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2021 HR-V AWDs with a customer complaint of inaccurate fuel gauge reading; less fuel remains in the fuel tank than indicated on the fuel gauge. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
A21-0472021-08-17. Service bulletin. "Service Bulletin - Due to the possibility of early deterioration of the Continuous Variable Transmission (CVT) drive belt, American Honda is extending the warranty coverage on these CVT models to 7 years from the original date of purchase or 150,000 miles, whichever comes first. If the PCM software was previously updated in service bulletin 21-046, Product Update: 2016-20 HR-V Software Update and CVT Inspection, the warranty extension applies, since the CVT primary drive belt is now a OBD-monitored part due to the addition of DTC P271E."
A21-0462021-08-17. Service bulletin. "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."