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Service bulletin 0509

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 id10017746
Published by NHTSA2005-11-23
Manufacturer's number0509
Manufacturer's date2005-10-26
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

MALFUNCTION INDICATOR LAMP (MIL) IS ON, DIAGNOSTIC TROUBLE CODES (DTCS) P1411, P1423, SECONDARY AIR INJECTION SYSTEM BANK 1, BANK 2, FLOW TOO LOW ARE STORED IN DTC MEMORY. *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

Engine

Trouble codes named

P1411, P1423

Vehicles listed
VOLKSWAGEN TOUAREG2004, 2005

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

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