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Service bulletins for the 2021 Audi A6 allroad

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.

1070 on file from NHTSA, as of 2026-10-19.

About P0300 on the 2021 Audi A6 allroad: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: P0300 are shown. Show all

Bulletins, newest first
A0124482014753_132025-01-07. Service bulletin. ENGINE. This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
A0124212069038_52024-06-25. Service bulletin. ENGINE. This bulletin provides information when the MIL is illuminated, cylinder misfires; P0300, P0301, P0302, P0303, P0304, P0305, P0306
A0124212069038_52024-06-25. Service bulletin. ENGINE. This bulletin provides information when the MIL is illuminated, cylinder misfires; P0300, P0301, P0302, P0303, P0304, P0305, P0306
A0123042072274_12024-01-04. Service bulletin. ENGINE. This bulletin provides information when the vehicle is running rough at idle; P030000, P030200, P030300, P030400.
A0123912069038_52023-12-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information for when the MIL is illuminated, DTCs P0300, P0301, P0302, P0303, P0304, P0305, P0306.
A0123852058038_52023-11-06. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE. This bulletin requests that technicians create a Pending Service Solutions record in the Pending Service Solutions Database in instances where there are misfires with DTCs P0300 through P0306.
A0123802069038_42023-11-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulltin provides information for when the MIL, cylinder misfires, DTCs P0300, P0301, P0302, P0303, P0304, P0305, P0306.
A0123362058038_42023-02-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin requests that technicians open a PSS record when the MIL is illuminated and DTCs P0300 - P0306 may be stored.

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