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Service bulletin KC-378

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 id10207401
Published by NHTSA2022-02-04
Manufacturer's numberKC-378
Manufacturer's date2022-01-18
NHTSA componentENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

NHTSA's summary

Volvo Chassis - Discharge Recirculation Valve (DRV) - FSB 258-029 , Engine Turbocharger Compressor Bypass Valve Deletion Kit , Installation

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, Engine control module

Vehicles listed
VOLVO 7802011
VOLVO VAH2011
VOLVO VH2011
VOLVO VHD2011
VOLVO VN2011
VOLVO VNL2011
VOLVO VNM2011
VOLVO VT2011

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