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Service bulletins for the 2016 Audi A6

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.

1018 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
A171670 2040644-2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). A metallic whistling or grinding sound is heard from the engine compartment when the vehicle is at idle speed. The sound usually occurs when the engine is warm. The MIL is sporadically on due to DTCs being stored in the ECM. A leak in the crankcase breather module can cause this condition.
A171780 2040644-2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). This bulletin provides repair instructions on diagnosing and replacing a leak in the crankcase breather module.
A201662 2043333-2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. The MIL is on due to DTCs P045100 (Evaporative Emission System Pressure Sensor/Switch Range/Performance) being present in the ECM.
A201660 2043333-2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. The MIL is on due to DTC P045100 (Evaporative Emission System Pressure Sensor/Switch Range/Performance) being stored in the ECM. Various parts have been replaced under warranty for the condition noted above, but no issues were identified with these parts.
EMAIL - TDI UPAT2017-06-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS EMAIL GIVES AN UPDATE ON THE CURRENT EMISSIONS ISSUES WITH REGARDS TO 2.0L AND 3.0L TDI VEHICLES.
EMAIL TDI UPDATE2017-03-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS EMAIL GIVES AN UPDATE ON THE CURRENT EMISSIONS ISSUES WITH REGARDS TO 2.0L AND 3.0L TDI VEHICLES.
EMAIL2017-03-10. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS EMAIL GIVES AN UPDATE ON THE CURRENT EMISSIONS ISSUES WITH REGARDS TO 2.0L AND 3.0L TDI VEHICLES.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.