VOLKSWAGEN
Circular 24TT_20260421
Manufacturer communications
- Publication date
- 2026-04-21
- Received by NHTSA
- 2026-05-05
- NHTSA record numbers
- 11032212
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.
Reported code forms
Check vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Volkswagen | TIGUAN | 2026 |