Service bulletin TSB250204
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 | 11026087 |
| Published by NHTSA | 2025-12-03 |
| Manufacturer's number | TSB250204 |
| Manufacturer's date | 2025-11-26 |
| NHTSA component | ENGINE |
NHTSA's summary
This Technical Service Bulletin describes the verification and resolution steps for the engine control module calibration which may contain a defect, resulting in an inability to clear fault code 3749 (Aftertreatment 1 Outlet NOx Sensor - Data Not Rational - Drifted High) after the root cause has been repaired.
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
Engine
| CUMMINS B6.7 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.