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Service bulletin CPI444774

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 id10161348
Published by NHTSA2019-06-24
Manufacturer's numberCPI444774
Manufacturer's date2019-05-30
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

256-6453 and 256-6454 temperature sensor used in fuel, air, and coolant applications are failing open or shorted. When the failure occurs, a diagnostic code can be generated or an alarm will sound.

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
CATERPILLAR C13
CATERPILLAR C15
CATERPILLAR C18
CATERPILLAR C9

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