# Service bulletin B21\-028

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: 10203800
- Published by NHTSA: 2021\-12\-03
- Manufacturer's number: B21\-028
- Manufacturer's date: 2021\-11\-23
- NHTSA component: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN

## NHTSA's summary

Service Bulletin \- The MIL comes on with DTC P061B \(PCM Internal Malfunction\) is stored.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10203800-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10203800-9999.pdf)

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

## Components

Electrical system, Engine, Transmission and driveline, Software

## Trouble codes named

P061B

## Vehicles listed

- 2019 to 2021 ACURA RDX
- 2021 ACURA TLX

## Recalls for the same vehicles and component

- [25V031000](/recalls/nhtsa/25V031000.md), 2025-01-23: ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM

## Other bulletins for the same vehicles and component

- [B19\-062](/bulletins/10167694.md), 2019-11-16, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Service Bulletin \- Vehicles with system software version D.1.2.1 or higher now have the capability to log MOST bus network failures.
- [B18\-045](/bulletins/10145033.md), 2018-10-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Service bulletin \- Some troubleshooting procedures for a loss of communication or F\-CAN malfunction DTC?s require running the F\-CAN Bus Connected Unit Check using the i\-HDS. There are certain control units that may be reported as Not Available in the Status column even though they are properly communicating.

JSON: [/v1/bulletins/10203800](/v1/bulletins/10203800)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20B21-028&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10203800&vehicle=Service%20bulletin%20B21-028)