Audi A4 2005–2006 — technical service bulletin
Bulletin 0602 · NHTSA communication 10019464 · issued Feb 13, 2006
Technical service bulletin
communication type
Electrical System
component
2005–2006
model years
2
vehicle entries
Official summary
Mil illumination due to setting of dtc p2404 (rationality check: reed sensor unable to open). *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.