# Service bulletin TSB260026

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: 11029820
- Published by NHTSA: 2026\-03\-06
- Manufacturer's number: TSB260026
- Manufacturer's date: 2026\-02\-18
- NHTSA component: FUEL/PROPULSION SYSTEM

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution steps for datalink 3 which may experience excessive interference, resulting in communication issues for components on the network and the possibility of fault codes 11938, 11939, 11941, 11943, 11949, 14523, 14524, and 14525 being set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029820-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029820-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

- CUMMINS BES

JSON: [/v1/bulletins/11029820](/v1/bulletins/11029820)

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