Audi A4 2002–2005 — technical service bulletin
Bulletin 0502 · NHTSA communication 10015102 · issued Apr 11, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002–2005
model years
12
vehicle entries
Official summary
Fuel injectors unnecessary replacement. *eh
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.