{"nhtsa_id":10250421,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-02-20","date":"2012-12-21","document_id":"0112652030230","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"MIL on, A8 4.2 FSI, P0491 or P0492 secondary air system bank 1/2 Insufficient flow - Repair Authorization","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10250421-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10250421-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10250421","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0491","P0492"],"topics":[],"vehicles":[{"make":"AUDI","model":"A8","year_from":2011,"year_to":2012,"match":"exact","vehicle_ids":["2011_audi_a8","2012_audi_a8"]}],"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":[]}