{"nhtsa_id":10180051,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-10-06","date":"2020-09-02","document_id":"Circular 24EZ","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL","mfr_system":null,"summary":"This action addresses an emissions system-related Engine-Off calculation error and improves the Oxygen Sensor Aging-Correction Factor. Neither concern has a direct impact to vehicle exhaust or evaporative emissions. However, either condition could affect proper operation of the Malfunction Indicator Lamp (MIL).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180051-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180051-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10180051","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"VOLKSWAGEN","model":"PASSAT","year_from":2018,"year_to":2018,"match":"exact","vehicle_ids":["2018_volkswagen_passat"]}],"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":[]}