{"nhtsa_id":10212656,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-05-31","date":"2012-11-05","document_id":"26 12 15 2026528","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES","mfr_system":null,"summary":"MIL on. DTC P0491 and P0492 (Secondary Air System Insufficient Flow, Bank 1/2) are stored at the same time.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10212656-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10212656-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10212656","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":["P0491","P0492"],"topics":[],"vehicles":[{"make":"AUDI","model":"A4","year_from":2010,"year_to":2011,"match":"exact","vehicle_ids":["2010_audi_a4","2011_audi_a4"]},{"make":"AUDI","model":"A6","year_from":2009,"year_to":2011,"match":"exact","vehicle_ids":["2009_audi_a6","2010_audi_a6","2011_audi_a6"]},{"make":"AUDI","model":"Q5","year_from":2009,"year_to":2011,"match":"exact","vehicle_ids":["2009_audi_q5","2010_audi_q5","2011_audi_q5"]}],"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":[]}