Service bulletins for the 2011 Audi A8
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.
991 on file from NHTSA, as of 2026-10-19.
About P0456 on the 2011 Audi A8: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P0456 are shown. Show all
| A011653 2027732- | 2017-10-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. The MIL is on due to DTC P045600 (very small EVAP leak) being stored in the ECM. No leaks were found in the EVAP system. Software update needed. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.