Service bulletins for the 2002 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.
94 on file from NHTSA, as of 2026-10-19.
About P1423 on the 2002 Audi A8: what the code means, and the bulletins and recalls about the same components.
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By component
By trouble code
Only bulletins with trouble code: P1423 are shown. Show all
| 260702 | 2007-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MIL ON (DTC'S P0300, P0411, P1128, P1130, P1411, P1423). THIS COULD BE CAUSED BY A CRACKED OR BROKEN VACUUM HOSE. *KB |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.