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Service bulletin TSB150006-050120

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 id10141330
Published by NHTSA2018-06-18
Manufacturer's numberTSB150006-050120
Manufacturer's date2018-05-01
NHTSA componentEQUIPMENT; ENGINE AND ENGINE COOLING

NHTSA's summary

This Technical Sesrvice Bulletin describes the verification and resolution of Diesel Exhaust Fluid (DEF) leaking around the aftertreatment DEF dosing unit electrical connector, caused by internal cracking due to freezing DEF. Possible Fault Codes due to this issue includes, but is not limited to: 1682, 1696, 2976, 3558, 3559, 3572, 3574, 3577, 3596 and 4251. This is a revision to a previous communication.

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, Equipment and accessories

Vehicles listed
CUMMINS ISB6.7
CUMMINS ISL 9
CUMMINS ISX12
CUMMINS ISX15

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