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Service bulletin ITB02015

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 id632210
Published by NHTSA2002-07-11
Manufacturer's numberITB02015
Manufacturer's date2002-03-21
NHTSA componentELECTRICAL SYSTEM:IGNITION:MODULE

NHTSA's summary

THIS BULLETIN IS AN AID TO THE DIAGNOSTIC PROCEDURES IN THE SERVICE MANUAL FOR DIAGNOSTIC TROUBLE CODE P1491 (VACUUM CUT VALVE BYPASS VALVE) FOR 1998 - 2002 ALL MODELS. *TT

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

Electrical system, Ignition

Trouble codes named

P1491

Vehicles listed
INFINITI INFINITI

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