Service bulletins for the 2016 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.
521 on file from NHTSA, as of 2026-10-19.
About P261B on the 2016 Audi S4: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P261B are shown. Show all
| A191666 2043142- | 2017-10-04. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING. The MIL is sporadically on. One or more of the following DTCs is stored in the engine control module (ECM, J623 (address word 01). They are DTC P261A00 (Coolant Pump ?B? Control Circuit/Open), DTC P261B00 (Coolant Pump ?B? Control Circuit Range/Performance), and DTC P261C00 (Coolant Pump ?B? Control Circuit Low). The continued coolant circulation pump sporadically fails. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.