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Service bulletin 168

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 id10022619
Published by NHTSA2007-09-12
Manufacturer's number168
Manufacturer's date2007-07-26
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

NHTSA's summary

PLASTIC NIPPLE OF THE POSITIVE CRANK VENTILATION (PCV) SYSTEM MAY CRACK OR BECOME LOOSE. THIS COULD RESULT IN AN AIR LEAK FROM THE CRANK CASE VENTILATION SYSTEM. THIS MAY CAUSE A WHISTLING NOISE OR CHECK ENGINE LIGHT MAY ILLUMINATE. *KB

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Exhaust and emissions, Crankcase ventilation (PCV)

Vehicles listed
VOLVO S802003, 2004
VOLVO XC902003, 2004

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