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Service bulletin FSB 221-010

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 id10078709
Published by NHTSA2016-08-15
Manufacturer's numberFSB 221-010
Manufacturer's date2016-05-09
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

DIAGNOSTIC TROUBLE CODES (DTCS), LOW OIL PRESSURE, CXU, GU, LEU, MRU.

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 CXU2010 to 2015
MACK GU2010 to 2015
MACK LEU2010 to 2015
MACK MRU2010 to 2015

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