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Service bulletin KC-2191

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 id10235283
Published by NHTSA2023-05-02
Manufacturer's numberKC-2191
Manufacturer's date2023-04-18
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

CBR: Volvo NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions. The primary failure mode the NOx Sensors is internal failure, which will generate a sensor specific fault code.

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
VOLVO VAH2013 to 2024
VOLVO VHD2013 to 2024
VOLVO VN2013 to 2024

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