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Service bulletins for the 2003 Audi A6

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.

138 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
200365822007-07-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LOSES POWER OR WILL NOT MOVE AFTER STOP. *KB
3807022007-04-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SHUDDERS WHEN ACCELERATING AT 10 TO 50% THROTTLE FROM A STATIONARY POSITION, SOMETIMES WITH FLUCUATING ENGINE SPEED. *KB
04022005-12-19. Service bulletin. ENGINE AND ENGINE COOLING. OIL LEAKS FROM UPPER ENGINE AREAS, DIAGNOSTIC GUIDELINES. *TT
05052005-11-30. Service bulletin. ENGINE AND ENGINE COOLING. COOLANT LEAKAGE AROUND AUXILIARY COOLANT PUMP. COOLANT LIGHT MAY BE ILLUMINATED. *TT
1905042005-07-29. Service bulletin. ENGINE AND ENGINE COOLING. THE COOLANT RESERVOIR IS DIAGNOSED TO BE LEAKING AND INTENDED TO BE REPLACED. *TT
05022005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. FUEL INJECTORS UNNECESSARY REPLACEMENT. *EH
05012005-05-19. Service bulletin. ENGINE AND ENGINE COOLING. SECONDARY AIR INJECTION (AIR) PUMP MOTOR -V101- IS NOISY. *TT
04062005-02-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. COOLANT LEAK AT OIL COOLER HOSES. *TT
04022004-11-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VALVE COVER, DIAGNOSING OIL LEAKAGE FROM GASKETS. *TT
04012004-08-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. OIL LEAK IN AREA OF TURBOCHARGER. *MJ
LZ2004-04-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. THE OXYGEN SENSOR IN THE EXHAUST SYSTEM COULD FAIL, POTENTIALLY CAUSING A VEHICLE TO EXCEED FEDERAL AND/OR CALIFORNIA EMISSIONS STANDARDS, OR TO EXPERIENCE INCREASED FUEL CONSUMPTION. IF THE OXYGEN SENSOR FAILS, THE VEHICLE'S CHECK ENGINE LIGHT ON THE DASHBOARD WILL ILLUMINATE. REVISED LETTER TO AUDI DEALER AND AUDI EMISSIONS RECALL CIRCULAR TO REPROGRAM THE ENGINE CONTROL MODULE (ECM) AND/OR REPLACE ONE OR TWO OXYGEN SENSORS. *TT
LZ2004-03-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. THE OXYGEN SENSOR IN THE EXHAUST SYSTEM COULD FAIL, POTENTIALLY CAUSING A VEHICLE TO EXCEED FEDERAL AND/OR CALIFORNIA EMISSIONS STANDARDS, OR TO EXPERIENCE INCREASED FUEL CONSUMPTION. IF THE OXYGEN SENSOR FAILS, THE VEHICLE'S CHECK ENGINE LIGHT ON THE DASHBOARD WILL ILLUMINATE. LETTER TO AUDI DEALER AND AUDI EMISSIONS RECALL CIRCULAR TO REPROGRAM THE ENGINE CONTROL MODULE (ECM) AND/OR REPLACE ONE OR TWO OXYGEN SENSORS. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.