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Service bulletin T1573

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 id10089183
Published by NHTSA2017-01-19
Manufacturer's numberT1573
Manufacturer's date2014-12-19
NHTSA componentENGINE

NHTSA's summary

THIS TEMPORARY REPAIR PRACTICE ADDRESSES FIBER MIGRATION ON DIESEL PARTICULATE FILTERS (DPF) ON CERTAIN ENGINES. LOOSE INSULATION FIBERS HAVE BEEN FOUND TO COVER THE FACE OF THE DPF RESULTING IN FAULT CODE 3322. REPLACEMENT OF THE DIESEL OXIDATION CATALYIST (DOC) IS REQUIRED ALONG WITH CLEANING OF THE DPF AND TEMPERATURE SENSOR.

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
CUMMINS ISX15

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