Service bulletins for the 2003 Audi A4
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.
163 on file from NHTSA, as of 2026-10-19.
About P0303 on the 2003 Audi A4: what the code means, and the bulletins and recalls about the same components.
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By component
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Only bulletins with trouble code: P0303 are shown. Show all
| 0507 | 2005-12-22. Service bulletin. ENGINE AND ENGINE COOLING. SPORADICALLY AFTER COLD START, ENGINE MAY RUN SLIGHTLY ROUGH FOR A FEW SECONDS AND THE MALFUNCTION INDICATOR LAMP MAY ILLUMINATE WITH ONLY MISFIRE DIAGNOSTIC TROUBLE CODES (DTC) (P0300, P0301, P0302, P0303, P0304) STORED IN DTC MEMORY. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.