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Service bulletin T1830

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 id10088026
Published by NHTSA2017-01-09
Manufacturer's numberT1830
Manufacturer's date2016-10-05
NHTSA componentENGINE

NHTSA's summary

THIS TEMPORARY REPAIR PRACTICE (TRP) IS BEING ISSUED TO ADDRESS DIESEL OXIDATION CATALYST (DOC) CRACKED INLET FLANGES ON CERTAIN ENGINES. THIE FIELD WILL BE NOTIFIED VIA A TECHNICAL SERVICE BULLETIN (TSB160099) TO VISUALLY INSPECT THE DOC FOR SOOT TRAILS THAT ARE CORRELATED WITH THIS FAILURE. ONCE SOOT IS IDENTIFIED, TECHNICIANS WILL BE INSTRUCTED TO FOLLOW THIS TRP FOR DOC REPLACEMENT.

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.