{"nhtsa_id":10253713,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-05-01","date":"2024-04-19","document_id":"CSA-036","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Faulty DEF sensors that due to shortage were not replaced. Instead engine software was temporarily modified to account for continued operation with a faulty sensor until replacement sensors were available. This campaign will install an engine control module calibration as well as confirm and/or install a new DEF header.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10253713-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10253713-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10253713","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"TIFFIN","model":"ALLEGRO BREEZE","year_from":2020,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"TIFFIN","model":"ALLEGRO BUS","year_from":2016,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"TIFFIN","model":"PHAETON","year_from":2017,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"TIFFIN","model":"ZEPHYR","year_from":2018,"year_to":2021,"match":null,"vehicle_ids":[]}],"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":[]}