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Service bulletin B21-011

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 id10189906
Published by NHTSA2021-04-05
Manufacturer's numberB21-011
Manufacturer's date2021-03-26
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Service Bulletin - The MIL comes on with DTC U0155 (Lost Communication with Gauge Control Module).

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

Trouble codes named

U0155

Vehicles listed
ACURA ILX2020, 2021
ACURA MDX2022

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

Recalls for the same vehicles and component
25V0310002025-01-23. ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM

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
B24-0582025-01-13. Service bulletin. Service Bulletin - Under certain circumstances when reversing near a chain-link fence or highly reflective surfaces, a parking and back-up sensor system abnormal message may be displayed in the multi-information display (MID).
B24-0472025-01-13. Service bulletin. Service Bulletin - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the media-oriented system (MOST) bus network which can potentially affect the audio sound quality.
ONL6M3091720242024-09-26. Other. Owner Notification Letter - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the media-oriented system (MOST) bus network which can potentially affect the audio sound quality.
B24-0472024-08-02. Service bulletin. Service Bulletin - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the media-oriented system transport (MOST) bus network which can potentially affect the audio sound quality.
BBOM073020249022024-08-02. Other. Dealer Message - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the Media Oriented System Transport (MOST) bus network which can potentially affect the audio sound quality.
BTI&070820249022024-07-11. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2024 MDXs that have failed the battery test. To better understand the cause of this condition, AHM would like to collect specific parts and photos from the vehicle prior to your attempting a repair of any kind.
BTI&053120249012024-06-03. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2024 MDXs that have failed the battery test. To better understand the cause of this condition, AHM would like to collect specific parts and photos from the vehicle prior to your attempting a repair of any kind.
BTI&051720249022024-05-22. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2024 MDXs that have failed the battery test. To better understand the cause of this condition, AHM would like to collect specific parts and photos from the vehicle prior to your attempting a repair of any kind.
BTI&050320249022024-05-15. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2024 MDXs that have failed the battery test. To better understand the cause of this condition, AHM would like to collect specific parts and photos from the vehicle prior to your attempting a repair of any kind.
BTI&040820249012024-04-17. Service bulletin. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2024 MDXs that have failed the battery test. To better understand the cause of this condition, AHM would like to collect specific parts and photos from the vehicle prior to your attempting a repair of any kind. (Click HERE for examples of the photos)