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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.

By type

By component

By trouble code

Bulletins, newest first
A6622862046229_32022-05-05. Service bulletin. STRUCTURE. This informational bulletin outlines proper warranty procedure for optical defects.
A3422562060242_32022-05-05. Service bulletin. POWER TRAIN. This bulletin contains instructions for when DTC P071800 and P081100 are stored with various transmission issues.
A3422552061714_22022-05-05. Service bulletin. POWER TRAIN. This bulletin contains repair instructions for resolving a leak on the transmission case.
A2022422065287_32022-05-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin describes the repair procedure to address an internal defect in the EVAP leak detection pump causing false leak detection.
DC_202203292022-04-05. Service bulletin. EQUIPMENT. Dealer Communication: Vehicle Sales Reporting, Reinstatement, and Audit Policy
A9122932062266_72022-04-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
A9122922065728_22022-04-05. Service bulletin. EQUIPMENT. This bulletin describes an error which may arise due to a bug in the software of a customer's phone, which causes the Apple CarPlay screen to appear blank, and for audio drop-outs.
A9122912062266_62022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
A9022552060332_62022-04-05. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING. This bulletin contains instructions for creating a PSS record when DTC C12D5FA is stored and the driver assist systems are inoperable and a warning message is displayed.
A4822242066318_22022-04-05. Service bulletin. STEERING; ELECTRICAL SYSTEM. This bulletin describes a software update to address DTCs B200FF0 or C12A329 stored in the axle wheel steering control module.
A9122902063702_42022-04-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin states to create a PSS when the MMI display turns blue. Workaround provided.
A9022532066620_12022-04-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin advises that the message "CNG inspection" or "CNG mode active" with no relevant DTCs is currently being investigated. Techs should create a PSS record when this concern is reported by a customer.
A4422912065474_22022-04-05. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. This bulletin contains repair instructions regarding a tire pressure monitoring system (TPMS) warning light with DTC U012700.
A4222482038689_62022-04-05. Service bulletin. SUSPENSION. This bulletin contains information on how to fix a clunking or rattling noise heard from the rear suspension when the vehicle is driven over bumps.
A4022342018194102022-04-05. Service bulletin. SUSPENSION. This informational bulletin contains knowledge on why oil may appear on one or several of the shock absorbers.
A3422542060242_22022-04-05. Service bulletin. POWER TRAIN. This bulletin contains instructions for when DTC P071800 and P081100 are stored with various transmission issues.
A4822232053869_52022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800.
A9122872066315_12022-04-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin describes a condition in which the USB ports may become damaged during use, and the procedure to repair.
A9122822064818_22022-04-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin contains repair instructions for when it is not possible to establish a bluetooth connection with DTC U110300.
A4822212066318_12022-04-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; STEERING. This bulletin provides instructions to update software to address a steering malfunction warning in the instrument cluster with DTC B200FF0 or C12A329.
A2722412058831_42022-04-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This bulletin contains a software update for DTC P0CA700 or U046900.
A1722172060750_32022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin contains instructions for using the UV additive to find engine oil leaks.
A1522402065684_12022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin describes the proper details the steps to identify and directs to repair steps to replace parts in the instance where a broken valve spring has been diagnosed.
A9122802059528_52022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains ODIS instructions for DTC B200096 or B200000 with an SOS malfunction warning displayed in the instrument cluster.
A9022462052299_42022-03-04. Service bulletin. EQUIPMENT. This bulletin contains repair instructions for proper transport mode deactivation (DTC U142100, DTC P169A00, and U13EB00 ).

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