Service bulletins for the 2015 Audi S4
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.
690 on file from NHTSA, as of 2026-10-19.
About P2440 on the 2015 Audi S4: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P2440 are shown. Show all
| A011748 2040403- | 2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This technical service bulletin instructs the reader to replace either a combi valve or vacuum solenoid valve depending on the circumstances under which DTC P244000 and/or P244200 were stored. |
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| A011688 2040403- | 2018-03-13. Service bulletin. ELECTRICAL SYSTEM. This technical service bulletin instructs the reader to replace either a combi valve or vacuum solenoid valve depending on the circumstances under which DTC P244000 and/or P244200 were stored. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.