Service bulletin SB 440B

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.

NHTSA's summary

This revised Service Bulletin was issued to reflect specific unit numbers in place of a VIN range list, and informs affected customers that Cummins has released Campaign C1846 that addresses calibration issues on ISX12 2013 engines in certain motor coach operations on model year 2014-2016 MCI D model coaches and model year 2014-2016 MCI J4500 model coaches.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

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

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

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