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Service bulletin KC-251

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 id10210043
Published by NHTSA2022-04-06
Manufacturer's numberKC-251
Manufacturer's date2022-03-18
NHTSA componentENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL

NHTSA's summary

Mack Chassis - Diagnostic Trouble Code ( DTC ) P249C Intermittently Lighting The Malfunction Indicator Lamp ( MIL ) - US14+OBD15 And US14+OBD16 (Non-Common Rail Fuel System) Emissions, Common Model Years 2016 and 2017

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, Fuel system

Trouble codes named

P249C

Vehicles listed
MACK CHU2016 to 2017
MACK CXU2016 to 2017
MACK GU2016 to 2017
MACK LEU2016 to 2017
MACK MRU2016 to 2017
MACK TD2016 to 2017

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