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Service bulletin TSB190091

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 id10203201
Published by NHTSA2021-11-08
Manufacturer's numberTSB190091
Manufacturer's date2021-09-22
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of fault codes 125, 222, 2191, 2973 and/or low power, white smoke, engine misfire, aftertreatment performance complaints as caused by incorrect pressure/ temperature sensor installed in the incorrect location on the engine. This is an update to a previously submitted 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

Vehicles listed
CUMMINS ISB6.7
CUMMINS ISC
CUMMINS ISL
CUMMINS ISM
CUMMINS ISX11.9
CUMMINS ISX12
CUMMINS ISX15
CUMMINS L9
CUMMINS X12
CUMMINS X15

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