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Service bulletin MCI Field Notes

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10152494
Published by NHTSA2019-01-07
Manufacturer's numberMCI Field Notes
Manufacturer's date2018-11-23
NHTSA componentENGINE

NHTSA's summary

This Service Advisory informs affected owners of model year 2017-2019 J4500 coaches equipped with DDC GHG17 engines, that the cold weather can bring on a rash of engine codes, notably 3216/16 - SCR inlet NOx Sensor code, which will cause the Maintenance Indicator Light (MIL) to illuminate and could cause a derate of 25% of available power; that DDC has developed an interim solution in the form of a need to apply a test calibration sticker on the engine and a new program upload to the engine that will temporarily suppress the 3216/16 code from illuminating the MIL and avoid the 25% derate. Widespread availability will be a couple of weeks in the process.

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

Vehicles listed
MCI J45002017 to 2019

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