{"nhtsa_id":11032212,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-05-05","date":"2026-04-21","document_id":"Circular 24TT_20260421","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032212-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032212-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11032212","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P1609"],"topics":[],"vehicles":[{"make":"VOLKSWAGEN","model":"TIGUAN","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_volkswagen_tiguan"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}