WenmarOpen by Wenmar Pro

Service bulletin FSB 284-040

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 id10083601
Published by NHTSA2016-10-27
Manufacturer's numberFSB 284-040
Manufacturer's date2013-08-22
NHTSA componentENGINE

NHTSA's summary

DIAGNOSTIC TROUBLE CODE (DTC) SPN 4094 FMI 18 AND SPN 5246 FMI 0 CAN LOG IN CERTAIN CHASSIS APPLICATIONS THAT LOAD THE ENGINE DURING IDLE CONDITIONS ON LEU AND MRU (MP7 EPA2010) TRUCKS BUILT BETWEEN 01/01/2010 AND 12/16/2012.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
MACK LEU2011 to 2013
MACK MRU2011 to 2013

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