VOLKSWAGEN

Dealer 24TT_20260421

2026-04-21 · NHTSA 11032215

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Under this service action, updated engine control module (ECM) software will be installed to provide robustness improvements to the ECM calibration for the turbocharger variable turbine geometry (VTG) actuator endpoints. This has no impact on vehicle emissions. Updated affected vehicles chart. Added note to the work instructions regarding fault code P160900.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.