Volkswagen Touareg 2004–2005 — technical service bulletin
Bulletin 0509 · NHTSA communication 10017746 · issued Oct 26, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2005
model years
2
vehicle entries
Official 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
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.