Service bulletin TSB250066
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 | 11018189 |
| Published by NHTSA | 2025-05-08 |
| Manufacturer's number | TSB250066 |
| Manufacturer's date | 2025-04-07 |
| NHTSA component | ENGINE |
NHTSA's summary
This Technical Service Bulletin describes the verification and resolution steps for the engine control module calibration which may takes 50 hours to learn proper engine operation when a new exhaust catalyst is installed, resulting in fault code 1864 being present after the installation of a new exhaust catalyst.
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 ISX12N |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.