{"nhtsa_id":10221839,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-26","date":"2020-08-27","document_id":"S2024000006","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM","mfr_system":null,"summary":"After Module Replacement A/C Systems Do Not Operate Properly. DTC B1938-64 Humidity Sensor LIN Bus ? Signal Plausibility Failure","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10221839-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10221839-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10221839","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":["B1938"],"topics":[],"vehicles":[{"make":"ALFA ROMEO","model":"GIULIA","year_from":2019,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"ALFA ROMEO","model":"STELVIO","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_alfa-romeo_stelvio","2020_alfa-romeo_stelvio"]}],"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":[]}