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Service bulletin WP1319

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 id10182690
Published by NHTSA2020-11-18
Manufacturer's numberWP1319
Manufacturer's date2020-09-24
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL

NHTSA's summary

Work Procedure: Optimization of DEF installation (corrective) This procedure has been released to assist in successfully optimizing the Diesel Exhaust Fluid (DEF) 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, Exhaust and emissions, Fuel system

Vehicles listed
VAN HOOL AG3002002 to 2004
VAN HOOL AG3002006 to 2007
VAN HOOL AG3002009

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