# Service bulletin A21\-037

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.

- Type: Service bulletin
- NHTSA id: 10189795
- Published by NHTSA: 2021\-04\-05
- Manufacturer's number: A21\-037
- Manufacturer's date: 2021\-03\-26
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Service Bulletin \- The current Battery Control Module \(BCM\) ECU software does not properly detect a deteriorated high voltage battery condition and does properly illuminate the MIL.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189795-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189795-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2014 HONDA ACCORD PLUG\-IN HYBRID

## Recalls for the same vehicles and component

- [2017327](/recalls/tc/2017327.md), 2017-06-30: Electrical
- [17V418000](/recalls/nhtsa/17V418000.md), 2017-06-29: ELECTRICAL SYSTEM:12V/24V/48V BATTERY

## Other bulletins for the same vehicles and component

- [ONL6BE20220825](/bulletins/10219543.md), 2022-09-09, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. Owner notification \- Our records indicate that an Emission Recall has not been completed on this vehicle. The current battery control module \(BCM\) software does not properly detect a deteriorated high\-voltage battery condition and does not properly illuminate the malfunction indicator lamp \(MIL\). The new BCM software fixes this issue.
- [SB15057](/bulletins/10204267.md), 2021-12-13, Service bulletin: ELECTRICAL SYSTEM. Safety Recall: HV cell voltage sensor CVS Software Supersedes 15\-057 dated January 8, 2016 to revise the information highlighted in yellow
- [6BE\_6B6ONL052521](/bulletins/10195043.md), 2021-06-04, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Owner Notification Letter \- Honda is conducting an emission recall of your 2014 Accord Plug\-In Hybrid. The current battery control module \(BCM\) software does not properly detect a deteriorated high\-voltage battery condition and does not properly illuminate the malfunction indicator lamp \(MIL\). The new BCM software fixes this issue.
- [A15\-055](/bulletins/10194915.md), 2021-06-03, Service bulletin: STEERING; ELECTRICAL SYSTEM. Service Bulletin \- When a failure is detected, the EPS control unit goes into back\-up mode. The new software provides partial assist during back\-up mode.
- [DLR\-02\-26\-2016](/bulletins/10193843.md), 2021-05-19, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:LABELS. Today, February 26, 2016, American Honda Motor Co., Inc. is announcing a Product Update for certain Accord, Civic, CR\-Z, Fit, and Insight model years 2014\-2016 vehicles for sale in the state of Hawaii to amend Monroney labels that were printed without bumper impact information. Basic Problem American Honda had a computer programming issue; an obsolete program name causing printing of no bumper impact information on the Monroney label for the state of Hawaii.
- [A21\-038](/bulletins/10190292.md), 2021-04-15, Service bulletin: ELECTRICAL SYSTEM. Service Bulletin \- Due to the possibility of early deterioration of the high\-voltage battery, American Honda is extending the warranty coverage on these batteries to 12 years from the original date of purchase or 200,000 miles, whichever comes first.
- [ABOM03262021902](/bulletins/10189832.md), 2021-04-05, Service bulletin: ELECTRICAL SYSTEM. Dealer Message \- Today, March 26, 2021, American Honda is announcing a stop sale and emissions recall for certain 2014 Accord Plug\-in Hybrid vehicles. The hybrid battery capacity may degrade without correctly illuminating the MIL as required.
- [A21\-038](/bulletins/10189828.md), 2021-04-05, Service bulletin: ELECTRICAL SYSTEM. Service Bulletin \- Due to the possibility of early deterioration of the high\-voltage battery, American Honda is extending the warranty coverage on these batteries to 12 years from the original date of purchase or 200,000 miles, whichever comes first.
- [A15\-055](/bulletins/10145409.md), 2018-10-15, Service bulletin: ELECTRICAL SYSTEM. Service bulletin \- When a failure is detected, the EPS control unit goes into back\-up mode. The new software provides partial assist during back\-up mode.
- [ATS180205](/bulletins/10129335.md), 2018-02-26, Service bulletin: ELECTRICAL SYSTEM. Tech line summary article \- We?re currently looking at an issue that when connected to Bluetooth® HandsFreeLink® using an iPhone with iOS 11, there?s no phonebook showing up on the On Demand Multi\-Use Display? \(ODMD\). If the phonebook doesn?t download, customers will have trouble accessing phonebook contacts using the voice control system.

JSON: [/v1/bulletins/10189795](/v1/bulletins/10189795)

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